- Update to 2.3.2:
  * Set ``Vary: Cookie`` header when the session is accessed, modified, or
    refreshed.
  * Update Werkzeug requirement to >=2.3.3 to apply recent bug fixes.
  * Restore deprecated ``from flask import Markup``.
  * Drop support for Python 3.7.
  * Update minimum requirements to the latest versions.
  * Remove previously deprecated code.
  * Importing ``escape`` and ``Markup`` from ``flask`` is deprecated.
  * The ``app.got_first_request`` property is deprecated.
  * The ``locked_cached_property`` decorator is deprecated.
  * Signals are always available. ``blinker>=1.6.2`` is a required dependency.
  * Signals support ``async`` subscriber functions.
  * Remove uses of locks that could cause requests to block each other very
    briefly.
  * Use modern packaging metadata with ``pyproject.toml``.
  * Ensure subdomains are applied with nested blueprints.
  * If a blueprint is created with an empty name it raises a ``ValueError``.
  * ``SESSION_COOKIE_DOMAIN`` does not fall back to ``SERVER_NAME``.
  * The ``routes`` command shows each rule's ``subdomain`` or ``host``
    when domain matching is in use.
  * Use postponed evaluation of annotations.
- Switch to pyproject macros.
- Delete unneeded .gitignore files, update rpmlintrc

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