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

Bumps [openai](https://github.com/openai/openai-python) from 1.39.0 to 1.40.5.
- [Release notes](https://github.com/openai/openai-python/releases)
- [Changelog](https://github.com/openai/openai-python/blob/main/CHANGELOG.md)
- [Commits](openai/openai-python@v1.39.0...v1.40.5)

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

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

examples/langchain-chroma/requirements.txt

@@ -1,4 +1,4 @@
 langchain==0.2.12
-openai==1.39.0
+openai==1.40.5
 chromadb==0.5.5
 llama-index==0.10.65