chore(deps): Bump chromadb from 0.5.5 to 0.5.7 in /examples/langchain-chroma (#3640)

chore(deps): Bump chromadb in /examples/langchain-chroma

Bumps [chromadb](https://github.com/chroma-core/chroma) from 0.5.5 to 0.5.7.
- [Release notes](https://github.com/chroma-core/chroma/releases)
- [Changelog](https://github.com/chroma-core/chroma/blob/main/RELEASE_PROCESS.md)
- [Commits](https://github.com/chroma-core/chroma/compare/0.5.5...0.5.7)

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

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