Update dependency flask to v3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
flask (changelog)	==2.3.3 -> ==3.0.3

---

Release Notes

pallets/flask (flask)

v3.0.3

Compare Source

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

v3.0.2

Compare Source

Released 2024-02-03

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

v3.0.1

Compare Source

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

v3.0.0

Compare Source

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.

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.

[renovate]

Edited/Blocked Notification

Renovate will not automatically rebase this PR, because it does not recognize the last commit author and assumes somebody else may have edited the PR.

You can manually request rebase by checking the rebase/retry box above.

⚠️ Warning: custom changes will be lost.