Bump litellm from 1.37.20 to 1.38.0 (OpenDevin#2005)

Bumps [litellm](https://github.com/BerriAI/litellm) from 1.37.20 to 1.38.0.
- [Release notes](https://github.com/BerriAI/litellm/releases)
- [Commits](BerriAI/litellm@v1.37.20...v1.38.0)

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

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