Update flask to 3.0.1

[pyup-bot]

This PR updates flask from 2.3.3 to 3.0.1.

Changelog

3.0.1

This is a fix release for the 3.0.x feature release branch.

Fixes an issue where using other JSON providers, such as `flask-orjson`, previously caused loaded session data to have an incorrect format in some cases.

* Changes: https://flask.palletsprojects.com/en/3.0.x/changes/#version-3-0-1
* Milestone: https://github.com/pallets/flask/milestone/32?closed=1
* PyPI: https://pypi.org/project/Flask/3.0.1/

3.0.0

This is a feature release, which includes new features, removes previously deprecated code, and adds new deprecations. The 3.0.x branch is now the supported fix branch, the 2.3.x branch will become a tag marking the end of support for that branch. We encourage everyone to upgrade, and to use a tool such as [pip-tools](https://pypi.org/project/pip-tools/) to pin all dependencies and control upgrades. Test with warnings treated as errors to be able to adapt to deprecation warnings early.

* Changes: https://flask.palletsprojects.com/en/3.0.x/changes/#version-3-0-0
* Milestone: https://github.com/pallets/flask/milestone/20?closed=1

Links

• PyPI: https://pypi.org/project/flask
• Changelog: https://data.safetycli.com/changelogs/flask/

[pyup-bot]

Closing this in favor of #321