Bump transformers from 4.30.0 to 4.38.0 in /.devcontainer

Bumps [transformers](https://github.com/huggingface/transformers) from 4.30.0 to 4.38.0.
- [Release notes](https://github.com/huggingface/transformers/releases)
- [Commits](huggingface/transformers@v4.30.0...v4.38.0)

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

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

.devcontainer/requirements.txt

@@ -19,4 +19,4 @@ tensorboard==2.8.0
 tokenizers==0.13.3
 torchinfo==0.0.8
 tqdm==4.66.3
-transformers==4.30.0
+transformers==4.38.0