Bump langchain from 0.1.16 to 0.2.10 in /application

Bumps [langchain](https://github.com/langchain-ai/langchain) from 0.1.16 to 0.2.10.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-openai==0.1.16...langchain==0.2.10)

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

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

application/requirements.txt

@@ -1,4 +1,4 @@
-langchain==0.1.16
+langchain==0.2.10
 langchain_community==0.2.9
 faiss-cpu==1.8.0
 openai==1.17.0