Changed the URL for the Mozilla S3 bucket
Signed-off-by: Maicon Domingues [dominguesm@outlook.com](mailto:dominguesm@outlook.com)

# What does this PR do ?

Changes the URL used to download Common Voice datasets, thus allowing the latest versions to be downloaded in any language.

**Collection**: asr

# Changelog 

The change allows any version and language of the Common Voice dataset to be downloaded. Directly pointing to the Bucket S3 made available by Mozilla.

It is worth mentioning that I have been following and using this URL for at least 4 months, so I believe the change is safe.

As the contract for using the `get_commonvoice_data.py` file has remained the same, no impact is expected on examples using this script.

# Usage
* You can potentially add a usage example below

```sh
!python scripts/dataset_processing/get_commonvoice_data.py \
    --data_root "datasets/$LANGUAGE/" \
    --manifest_dir=$manifest_dir \
    --sample_rate=16000 \
    --n_channels=1 \
    --version="cv-corpus-11.0-2022-09-21" \
    --language="pt" \
    --log \
    --files_to_process 'train.tsv' 'dev.tsv' 'test.tsv'
```

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**PR Type**:
- [x] New Feature
- [ ] Bugfix
- [ ] Documentation

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# Additional Information
* Related to # (issue)
