Bump langchain-community from 0.3.25 to 0.3.26 (#5104)

Bumps [langchain-community](https://github.com/langchain-ai/langchain) from 0.3.25 to 0.3.26.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain==0.3.25...langchain==0.3.26)

---
updated-dependencies:
- dependency-name: langchain-community
  dependency-version: 0.3.26
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements.txt

@@ -4,7 +4,7 @@ boto3==1.38.46
 imbalanced-learn==0.13.0
 langchain==0.3.26
 langchain-anthropic==0.3.15
-langchain-community==0.3.25
+langchain-community==0.3.26
 langchain-google-genai==2.1.5
 langchain-mistralai==0.2.10
 langchain-openai==0.3.27