chore(deps): bump langchain in /label_studio_ml/examples/watsonx_llm

Bumps [langchain](https://github.com/langchain-ai/langchain) from 0.1.8 to 0.3.7.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-ibm==0.1.8...langchain==0.3.7)

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

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

Author: dependabot[bot]

label_studio_ml/examples/watsonx_llm/requirements.txt

@@ -1,7 +1,7 @@
 ibm-watsonx-ai<0.2.0
 presto-python-client
 pydantic>=1.10.0
-langchain==0.1.8
+langchain==0.3.7
 langchain_ibm==0.1.0
 pytesseract==0.3.10
 label_studio_sdk==1.0.4