[HOT-FIX] Bump transformers to 4.30.1 to fix BFloat16 error with sample image generation

Describe your changes

Bumped the version of transformers in requirements.txt to version 4.30.1 to resolve an issue with sample image generation during training.

[X] This is based on the /dev branch (Or a fork of it)
[X] This was created or at least validated using a proper IDE
[X] I have tested this code and validated any modified functions
[ ] I have added the appropriate documentation and hint strings if adding or changing a user-facing feature