Gemma v0.20.7 Release: Model Quality Fixes and ROCm Update

AI Impact Summary

This release introduces critical updates to the Gemma model, specifically addressing quality issues with the e2b and e4b variants when 'thinking' is disabled. Furthermore, the team has updated the ROCm runtime to version 7.2.1 on Linux, ensuring compatibility and stability for users leveraging the Gemma models. These changes represent a significant improvement to the model's performance and reliability.