Bump langchain from 0.2.10 to 0.3.0 in /application (#281)

Bumps [langchain](https://github.com/langchain-ai/langchain) from 0.2.10 to 0.3.0.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain==0.2.10...langchain==0.3.0)

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

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

Author: dependabot[bot]

application/requirements.txt

@@ -1,4 +1,4 @@
-langchain==0.2.10
+langchain==0.3.0
 langchain_community==0.3.0
 faiss-cpu==1.8.0
 openai==1.17.0