Update flask requirement from <2.3,>=2 to >=2,<2.4

[dependabot]

Updates the requirements on flask to permit the latest version.

Release notes

Sourced from flask's releases.

2.3.1

This is a fix release for the 2.3.x release branch.

• Changes: https://flask.palletsprojects.com/en/2.3.x/changes/#version-2-3-1
• Milestone: https://github.com/pallets/flask/milestone/28?closed=1

Changelog

Sourced from flask's changelog.

Version 2.3.1

Released 2023-04-25

• Restore deprecated from flask import Markup. :issue:5084

Version 2.3.0

Released 2023-04-25

• Drop support for Python 3.7. :pr:5072

• Update minimum requirements to the latest versions: Werkzeug>=2.3.0, Jinja2>3.1.2, itsdangerous>=2.1.2, click>=8.1.3.

• Remove previously deprecated code. :pr:4995

  • The push and pop methods of the deprecated _app_ctx_stack and _request_ctx_stack objects are removed. top still exists to give extensions more time to update, but it will be removed.
  • The FLASK_ENV environment variable, ENV config key, and app.env property are removed.
  • The session_cookie_name, send_file_max_age_default, use_x_sendfile, propagate_exceptions, and templates_auto_reload properties on app are removed.
  • The JSON_AS_ASCII, JSON_SORT_KEYS, JSONIFY_MIMETYPE, and JSONIFY_PRETTYPRINT_REGULAR config keys are removed.
  • The app.before_first_request and bp.before_app_first_request decorators are removed.
  • json_encoder and json_decoder attributes on app and blueprint, and the corresponding json.JSONEncoder and JSONDecoder classes, are removed.
  • The json.htmlsafe_dumps and htmlsafe_dump functions are removed.
  • Calling setup methods on blueprints after registration is an error instead of a warning. :pr:4997

• Importing escape and Markup from flask is deprecated. Import them directly from markupsafe instead. :pr:4996

• The app.got_first_request property is deprecated. :pr:4997

• The locked_cached_property decorator is deprecated. Use a lock inside the decorated function if locking is needed. :issue:4993

• Signals are always available. blinker>=1.6.2 is a required dependency. The signals_available attribute is deprecated. :issue:5056

• Signals support async subscriber functions. :pr:5049

• Remove uses of locks that could cause requests to block each other very briefly. :issue:4993

• Use modern packaging metadata with pyproject.toml instead of setup.cfg. :pr:4947

• Ensure subdomains are applied with nested blueprints. :issue:4834

• config.from_file can use text=False to indicate that the parser wants a

... (truncated)

Commits

• 721abdc release version 2.3.1
• 0867dce Merge pull request #5085 from lucaswerkmeister/patch-1
• 0ec9192 fix importing Markup from flask
• 345f184 start version 2.3.1
• 5f40724 Merge pull request #5083 from pallets/release-2.3.0
• 8728c3e release version 2.3.0
• eb33b8c Merge pull request #5082 from pallets/minimum-requirements
• 79ebf6c update minimum requirements
• 73739a2 Merge branch '2.2.x'
• ddc7acc Merge pull request #5081 from pallets/release-2.2.4
• Additional commits viewable in compare view

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[Glandos]

We want to support Python 3.7.

[dependabot]

Superseded by #1236.