Bump langchain-openai from 0.2.14 to 0.3.2 (#4777)

Bumps [langchain-openai](https://github.com/langchain-ai/langchain) from 0.2.14 to 0.3.2.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](https://github.com/langchain-ai/langchain/compare/langchain-openai==0.2.14...langchain-openai==0.3.2)

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

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

requirements.txt

@@ -7,7 +7,7 @@ langchain-anthropic==0.3.1
 langchain-community==0.3.14
 langchain-google-genai==2.0.9
 langchain-mistralai==0.2.3
-langchain-openai==0.2.14
+langchain-openai==0.3.2
 libmozdata==0.2.9
 llama-cpp-python==0.3.6
 lmdb==1.5.1