Bump transformers from 4.39.2 to 4.40.2

Bumps [transformers](https://github.com/huggingface/transformers) from 4.39.2 to 4.40.2.
- [Release notes](https://github.com/huggingface/transformers/releases)
- [Commits](huggingface/transformers@v4.39.2...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]>