Bump flask from 2.2.5 to 3.0.0

Bumps [flask](https://github.com/pallets/flask) from 2.2.5 to 3.0.0.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](pallets/flask@2.2.5...3.0.0)

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

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

requirements.txt

@@ -7,7 +7,7 @@ cffi==1.15.1
 click==8.1.7
 charset-normalizer==3.2.0
 discid==1.2.0
-Flask==2.2.5 # broken
+Flask==3.0.0 # broken
 Flask-Cors==4.0.0
 Flask-Login==0.6.2
 Flask-Migrate==4.0.4