Bump langchain from 0.0.263 to 0.0.308 in /application

Bumps [langchain](https://github.com/langchain-ai/langchain) from 0.0.263 to 0.0.308.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](https://github.com/langchain-ai/langchain/compare/v0.0.263...v0.0.308)

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

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

application/requirements.txt

@@ -41,7 +41,7 @@ Jinja2==3.1.2
 jmespath==1.0.1
 joblib==1.2.0
 kombu==5.2.4
-langchain==0.0.263
+langchain==0.0.308
 loguru==0.6.0
 lxml==4.9.2
 MarkupSafe==2.1.2