chore(deps): Bump flask from 3.0.3 to 3.1.0 in /rootfs/webapp

Bumps [flask](https://github.com/pallets/flask) from 3.0.3 to 3.1.0.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](pallets/flask@3.0.3...3.1.0)

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

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

rootfs/webapp/requirements.txt

@@ -1,4 +1,4 @@
-Flask==3.0.3
+Flask==3.1.0
 Flask-SocketIO==5.4.1
 gevent==24.10.3
 gunicorn[gevent]==23.0.0