Bump flask from 2.3.3 to 3.0.0

Bumps [flask](https://github.com/pallets/flask) from 2.3.3 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@2.3.3...3.0.0)

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

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

requirements.txt

@@ -1,5 +1,5 @@
 Flask-Principal==0.4.0
-Flask==2.3.3
+Flask==3.0.0
 Pygments==2.16.1
 Werkzeug==3.0.0
 bleach==6.0.0