Update dependency flask to v2.3.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
flask (changelog)	==2.2.2 -> ==2.3.3

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Release Notes

pallets/flask (flask)

v2.3.3

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Released 2023-08-21

• Python 3.12 compatibility.
• Require Werkzeug >= 2.3.7.
• Use flit_core instead of setuptools as build backend.
• Refactor how an app's root and instance paths are determined. :issue:5160

v2.3.2

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Released 2023-05-01

• Set Vary: Cookie header when the session is accessed, modified, or refreshed.
• Update Werkzeug requirement to >=2.3.3 to apply recent bug fixes.

v2.3.1

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Released 2023-04-25

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

v2.3.0

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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
  binary file instead. :issue:4989

• If a blueprint is created with an empty name it raises a ValueError.
  :issue:5010

• SESSION_COOKIE_DOMAIN does not fall back to SERVER_NAME. The default is not
  to set the domain, which modern browsers interpret as an exact match rather than
  a subdomain match. Warnings about localhost and IP addresses are also removed.
  :issue:5051

• The routes command shows each rule's subdomain or host when domain
  matching is in use. :issue:5004

• Use postponed evaluation of annotations. :pr:5071

v2.2.5

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Released 2023-05-02

• Update for compatibility with Werkzeug 2.3.3.
• Set Vary: Cookie header when the session is accessed, modified, or refreshed.

v2.2.4

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Released 2023-04-25

• Update for compatibility with Werkzeug 2.3.

v2.2.3

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Released 2023-02-15

• Autoescape is enabled by default for .svg template files. :issue:4831
• Fix the type of template_folder to accept pathlib.Path. :issue:4892
• Add --debug option to the flask run command. :issue:4777

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