build(deps): bump flask from 3.1.2 to 3.1.3 in /src

Bumps [flask](https://github.com/pallets/flask) from 3.1.2 to 3.1.3.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](https://github.com/pallets/flask/compare/3.1.2...3.1.3)

---
updated-dependencies:
- dependency-name: flask
  dependency-version: 3.1.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

src/requirements.txt

@@ -2,7 +2,7 @@ bcrypt==5.0.0
 ifcfg==0.24
 psutil==7.2.2
 pyotp==2.9.0
-Flask==3.1.2
+Flask==3.1.3
 flask-cors==6.0.2
 icmplib==3.0.4
 gunicorn==25.0.3