Revert Mcore update since it caused regression
<!-- pylint-output-strict-mode-false -->

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---

Your code was analyzed with PyLint. The following annotations have been identified:

```
************* Module nemo.collections.llm.gpt.model.gemma
nemo/collections/llm/gpt/model/gemma.py:40:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/gpt/model/gemma.py:59:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/gpt/model/gemma.py:68:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/gpt/model/gemma.py:76:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/gpt/model/gemma.py:80:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/gpt/model/gemma.py:84:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/gpt/model/gemma.py:104:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/gpt/model/gemma.py:124:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/gpt/model/gemma.py:137:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/gpt/model/gemma.py:143:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/gpt/model/gemma.py:175:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/gpt/model/gemma.py:194:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/gpt/model/gemma.py:207:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/gpt/model/gemma.py:211:4: C0116: Missing function or method docstring (missing-function-docstring)
************* Module nemo.collections.nlp.models.language_modeling.megatron_base_model
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:103:0: C0301: Line too long (149/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:111:0: C0301: Line too long (134/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:253:0: C0301: Line too long (125/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:271:0: C0301: Line too long (120/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:346:0: C0301: Line too long (133/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:606:0: C0301: Line too long (123/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:661:0: C0301: Line too long (153/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:833:0: C0301: Line too long (122/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:971:0: C0301: Line too long (121/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:990:0: C0301: Line too long (136/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:1107:0: C0301: Line too long (195/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:1164:0: C0301: Line too long (135/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:1213:0: C0301: Line too long (120/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:1296:0: C0301: Line too long (128/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:330:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:461:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:466:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:699:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:751:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:932:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:1036:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:1271:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:1302:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:1306:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_base_model.py:1310:4: C0116: Missing function or method docstring (missing-function-docstring)
************* Module nemo.collections.nlp.models.language_modeling.megatron_retro_model
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:36:0: C0301: Line too long (199/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:142:0: C0301: Line too long (191/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:304:0: C0301: Line too long (126/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:335:0: C0301: Line too long (140/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:386:0: C0301: Line too long (123/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:441:0: C0301: Line too long (206/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:451:0: C0301: Line too long (124/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:458:0: C0301: Line too long (210/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:462:0: C0301: Line too long (161/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:112:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:15:0: W0611: Unused import itertools (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:18:0: W0611: Unused import queue (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:20:0: W0611: Unused import warnings (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:21:0: W0611: Unused fields imported from dataclasses (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:23:0: W0611: Unused Dict imported from typing (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:23:0: W0611: Unused Iterator imported from typing (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:23:0: W0611: Unused List imported from typing (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:23:0: W0611: Unused Union imported from typing (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:26:0: W0611: Unused CPUAccelerator imported from lightning.pytorch.accelerators (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:38:0: W0611: Unused MegatronBaseModel imported from nemo.collections.nlp.models.language_modeling.megatron_base_model (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:40:0: W0611: Unused build_model imported from nemo.collections.nlp.modules.common.megatron.build_model (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:41:0: W0611: Unused Float16Module imported from nemo.collections.nlp.modules.common.megatron.module (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:42:0: W0611: Unused get_all_params_for_weight_decay_optimization imported from nemo.collections.nlp.modules.common.megatron.utils (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:42:0: W0611: Unused get_ltor_masks_and_position_ids imported from nemo.collections.nlp.modules.common.megatron.utils (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:42:0: W0611: Unused get_params_for_weight_decay_optimization imported from nemo.collections.nlp.modules.common.megatron.utils (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:49:0: W0611: Unused TextGenerationStrategy imported from nemo.collections.nlp.modules.common.text_generation_strategy (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:50:0: W0611: Unused get_default_length_params imported from nemo.collections.nlp.modules.common.text_generation_utils (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:50:0: W0611: Unused get_default_sampling_params imported from nemo.collections.nlp.modules.common.text_generation_utils (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:50:0: W0611: Unused megatron_gpt_generate imported from nemo.collections.nlp.modules.common.text_generation_utils (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:57:0: W0611: Unused LengthParam imported from nemo.collections.nlp.modules.common.transformer.text_generation (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:57:0: W0611: Unused OutputType imported from nemo.collections.nlp.modules.common.transformer.text_generation (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:57:0: W0611: Unused SamplingParam imported from nemo.collections.nlp.modules.common.transformer.text_generation (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:57:0: W0611: Unused TextGeneration imported from nemo.collections.nlp.modules.common.transformer.text_generation (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:63:0: W0611: Unused utils_funcs imported from nemo.collections.nlp.parts (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:64:0: W0611: Unused activation_to_func imported from nemo.collections.nlp.parts.utils_funcs (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:64:0: W0611: Unused get_last_rank imported from nemo.collections.nlp.parts.utils_funcs (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:65:0: W0611: Unused Exportable imported from nemo.core.classes (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:66:0: W0611: Unused PretrainedModelInfo imported from nemo.core.classes.common (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:67:0: W0611: Unused ChannelType imported from nemo.core.neural_types (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:67:0: W0611: Unused NeuralType imported from nemo.core.neural_types (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:72:4: W0611: Unused InferenceParams imported from megatron.core (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:80:4: W0611: Unused TransformerConfig imported from megatron.core.transformer.transformer_config (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:81:4: W0611: Unused init_method_normal imported from megatron.core.utils (unused-import)
nemo/collections/nlp/models/language_modeling/megatron_retro_model.py:81:4: W0611: Unused scaled_init_method_normal imported from megatron.core.utils (unused-import)
************* Module scripts.checkpoint_converters.convert_bert_hf_to_nemo
scripts/checkpoint_converters/convert_bert_hf_to_nemo.py:65:0: C0301: Line too long (218/119) (line-too-long)
scripts/checkpoint_converters/convert_bert_hf_to_nemo.py:38:0: C0116: Missing function or method docstring (missing-function-docstring)
scripts/checkpoint_converters/convert_bert_hf_to_nemo.py:56:0: C0116: Missing function or method docstring (missing-function-docstring)
scripts/checkpoint_converters/convert_bert_hf_to_nemo.py:79:0: C0116: Missing function or method docstring (missing-function-docstring)

-----------------------------------
Your code has been rated at 9.42/10
```

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Thank you for improving NeMo's documentation! [🤖]: Hi @pablo-garay 👋,

We wanted to let you know that a [CICD pipeline](https://github.com/NVIDIA/NeMo/actions/runs/12678860600) for this PR just finished successfully

So it might be time to merge this PR or get some approvals

I'm just a bot so I'll leave it you what to do next.

//cc @pablo-garay @ko3n1g
Revert Mcore update since it caused regression