Bump langchain from 0.1.1 to 0.1.11

Bumps [langchain](https://github.com/langchain-ai/langchain) from 0.1.1 to 0.1.11.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@v0.1.1...v0.1.11)

---
updated-dependencies:
- dependency-name: langchain
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -13,5 +13,5 @@ azureml-mlflow==1.53.0
 rtoml>=0.10.0
 pytest
 
-langchain==0.1.1
+langchain==0.1.11
 langchain-openai==0.0.2.post1