Bump transformers from 4.19.2 to 4.38.0

Bumps [transformers](https://github.com/huggingface/transformers) from 4.19.2 to 4.38.0.
- [Release notes](https://github.com/huggingface/transformers/releases)
- [Commits](huggingface/transformers@v4.19.2...v4.38.0)

---
updated-dependencies:
- dependency-name: transformers
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -9,7 +9,7 @@ omegaconf==2.1.1
 test-tube>=0.7.5
 streamlit>=0.73.1
 einops==0.3.0
-transformers==4.19.2
+transformers==4.38.0
 webdataset==0.2.5
 open-clip-torch==2.7.0
 gradio==3.13.2