Bump langchain from 0.0.154 to 0.0.236 in /labs/DataDialogue

Bumps [langchain](https://github.com/hwchase17/langchain) from 0.0.154 to 0.0.236.
- [Release notes](https://github.com/hwchase17/langchain/releases)
- [Commits](langchain-ai/langchain@v0.0.154...v0.0.236)

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

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

labs/DataDialogue/requirements.txt

@@ -1,4 +1,4 @@
-langchain==0.0.154
+langchain==0.0.236
 openai==0.27.5
 streamlit==1.22.0
 black==23.3.0