Bump flask from 2.3.3 to 3.0.3 in /backend

[dependabot]

Bumps flask from 2.3.3 to 3.0.3.

Release notes

Sourced from flask's releases.

3.0.3

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

PyPI: https://pypi.org/project/Flask/3.0.3/ Changes: https://flask.palletsprojects.com/en/3.0.x/changes/#version-3-0-3 Milestone: https://github.com/pallets/flask/milestone/35?closed=1

• The default hashlib.sha1 may not be available in FIPS builds. Don't access it at import time so the developer has time to change the default. #5448
• Don't initialize the cli attribute in the sansio scaffold, but rather in the Flask concrete class. #5270

3.0.2

This is a fix release for the 3.0.x feature release branch. It fixes bugs but does not otherwise change behavior and should not result in breaking changes.

• Changes: https://flask.palletsprojects.com/en/3.0.x/changes/#version-3.0.2
• Milestone: https://github.com/pallets/flask/milestone/34?closed=1
• PyPI: https://pypi.org/project/Flask/3.0.2/

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 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

Changelog

Sourced from flask's changelog.

Version 3.0.3

Released 2024-04-07

• The default hashlib.sha1 may not be available in FIPS builds. Don't access it at import time so the developer has time to change the default. :issue:5448
• Don't initialize the cli attribute in the sansio scaffold, but rather in the Flask concrete class. :pr:5270

Version 3.0.2

Released 2024-02-03

• Correct type for jinja_loader property. :issue:5388
• Fix error with --extra-files and --exclude-patterns CLI options. :issue:5391

Version 3.0.1

Released 2024-01-18

• Correct type for path argument to send_file. :issue:5230
• Fix a typo in an error message for the flask run --key option. :pr:5344
• Session data is untagged without relying on the built-in json.loads object_hook. This allows other JSON providers that don't implement that. :issue:5381
• Address more type findings when using mypy strict mode. :pr:5383

Version 3.0.0

Released 2023-09-30

• Remove previously deprecated code. :pr:5223
• Deprecate the __version__ attribute. Use feature detection, or importlib.metadata.version("flask"), instead. :issue:5230
• Restructure the code such that the Flask (app) and Blueprint classes have Sans-IO bases. :pr:5127
• Allow self as an argument to url_for. :pr:5264
• Require Werkzeug >= 3.0.0.

Commits

• c12a5d8 release version 3.0.3
• 5e22cc9 Don't set the cli attribute in the sansio scaffold (#5270)
• 5fdce4c Don't set the cli attribute in the sansio scaffold
• adb7dd9 don't access app.logger when configuring app.logger
• b739390 support FIPS builds without SHA-1 (#5460)
• db46111 access sha1 lazily
• 7320e31 start version 3.0.3
• 87d5f5b update project files (#5457)
• d5e321b release version 3.0.2 (#5403)
• d203059 release version 3.0.2
• Additional commits viewable in compare view

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[tillprochaska]

@dependabot rebase