Bump flask-cors from 4.0.0 to 5.0.0 in /llm-server

Bumps [flask-cors](https://github.com/corydolphin/flask-cors) from 4.0.0 to 5.0.0.
- [Release notes](https://github.com/corydolphin/flask-cors/releases)
- [Changelog](https://github.com/corydolphin/flask-cors/blob/main/CHANGELOG.md)
- [Commits](corydolphin/flask-cors@4.0.0...5.0.0)

---
updated-dependencies:
- dependency-name: flask-cors
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

llm-server/requirements.txt

@@ -37,7 +37,7 @@ exceptiongroup==1.1.3
 fastapi==0.109.1
 filelock==3.13.4
 Flask==3.0.0
-Flask-Cors==4.0.0
+Flask-Cors==5.0.0
 Flask-SocketIO==5.3.6
 Flask-SQLAlchemy==3.1.1
 flatbuffers==23.5.26