Bump langchain-openai from 0.1.17 to 0.1.19 (#4366)

Bumps [langchain-openai](https://github.com/langchain-ai/langchain) from 0.1.17 to 0.1.19.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](https://github.com/langchain-ai/langchain/compare/langchain-openai==0.1.17...langchain-openai==0.1.19)

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

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

requirements.txt

@@ -4,7 +4,7 @@ boto3==1.34.149
 imbalanced-learn==0.12.3
 langchain==0.2.11
 langchain-community==0.2.10
-langchain-openai==0.1.17
+langchain-openai==0.1.19
 libmozdata==0.2.6
 lmdb==1.5.1
 lxml-html-clean==0.1.1