Bump flask-socketio from 5.4.1 to 5.5.0 in /server

Bumps [flask-socketio](https://github.com/miguelgrinberg/flask-socketio) from 5.4.1 to 5.5.0.
- [Release notes](https://github.com/miguelgrinberg/flask-socketio/releases)
- [Changelog](https://github.com/miguelgrinberg/Flask-SocketIO/blob/main/CHANGES.md)
- [Commits](miguelgrinberg/Flask-SocketIO@v5.4.1...v5.5.0)

---
updated-dependencies:
- dependency-name: flask-socketio
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

server/requirements/base.txt

@@ -26,7 +26,7 @@ Authlib==1.4.0
 passlib==1.7.4
 werkzeug==3.1.3
 Flask-Executor==1.0.0
-Flask-SocketIO==5.4.1
+Flask-SocketIO==5.5.0
 Flask-Cors==5.0.0
 dnspython==2.7.0
 signxml==4.0.3