Update gemma for trt-llm 0.9
LGTM @meatybobby Could you please approve the PR on the code changes tab? We need one approval to be able to merge the PR. jenkins
# What does this PR do ?

Updates gemma export for trt-llm 0.9

**Collection**: None

# Changelog 
- Update gemma export for trt-llm 0.9
  
**PR Type**:
- [ ] New Feature
- [x] Bugfix
- [ ] Documentation

