Bump transformers from 4.36.1 to 4.40.2

Bumps [transformers](https://github.com/huggingface/transformers) from 4.36.1 to 4.40.2.
- [Release notes](https://github.com/huggingface/transformers/releases)
- [Commits](huggingface/transformers@v4.36.1...v4.40.2)

---
updated-dependencies:
- dependency-name: transformers
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -74,7 +74,7 @@ torch==2.1.2
 torchvision==0.17.1
 tqdm==4.66.2
 transformer-smaller-training-vocab==0.3.3
-transformers==4.36.1
+transformers==4.40.2
 typing_extensions==4.9.0
 tzdata==2024.1
 urllib3==2.1.0