Bump flask-socketio from 5.3.7 to 5.4.0

Bumps [flask-socketio](https://github.com/miguelgrinberg/flask-socketio) from 5.3.7 to 5.4.0.
- [Release notes](https://github.com/miguelgrinberg/flask-socketio/releases)
- [Changelog](https://github.com/miguelgrinberg/Flask-SocketIO/blob/main/CHANGES.md)
- [Commits](miguelgrinberg/Flask-SocketIO@v5.3.7...v5.4.0)

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

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

requirements.txt

@@ -1,5 +1,5 @@
 csvkit==2.0.1
-Flask-SocketIO==5.3.7
+Flask-SocketIO==5.4.0
 Flask==3.0.3
 orjson==3.10.7
 pandas==2.2.3