Add changelog entries

Author: cdce8p

docs/reference/changelog.rst

@@ -5,6 +5,8 @@ Changelog
 0.26.0 (UNRELEASED)
 ===================
 - Adds configuration option that sets default event loop scope for all testss `#793 <https://github.com/pytest-dev/pytest-asyncio/issues/793>`_
+- Improved type annotations for ``pytest_asyncio.fixture`` `#1045 <https://github.com/pytest-dev/pytest-asyncio/pull/1045>`_
+- Added ``typing-extensions`` as additional dependency for Python ``<3.10`` `#1045 <https://github.com/pytest-dev/pytest-asyncio/pull/1045>`_
 
 
 0.25.2 (2025-01-08)