build: Prepare release of v0.25.0

Author: seifertm

docs/reference/changelog.rst

@@ -2,7 +2,7 @@
 Changelog
 =========
 
-0.25.0 (UNRELEASED)
+0.25.0 (2024-12-13)
 ===================
 - Deprecated: Added warning when asyncio test requests async ``@pytest.fixture`` in strict mode. This will become an error in a future version of flake8-asyncio. `#979 <https://github.com/pytest-dev/pytest-asyncio/pull/979>`_
 - Updates the error message about `pytest.mark.asyncio`'s `scope` keyword argument to say `loop_scope` instead. `#1004 <https://github.com/pytest-dev/pytest-asyncio/pull/1004>`_