Bump litellm from 1.40.2 to 1.40.4 (#2300)

Bumps [litellm](https://github.com/BerriAI/litellm) from 1.40.2 to 1.40.4.
- [Release notes](https://github.com/BerriAI/litellm/releases)
- [Commits](BerriAI/litellm@v1.40.2...v1.40.4)

---
updated-dependencies:
- dependency-name: litellm
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]