Add dataclass field default change to 3.11 what's new (GH-96790)

Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
(cherry picked from commit 4995f5f)

Co-authored-by: Laurie O <laurie_opperman@hotmail.com>

Author: miss-islington

Doc/whatsnew/3.11.rst

@@ -534,6 +534,14 @@ Added non parallel-safe :func:`~contextlib.chdir` context manager to change
 the current working directory and then restore it on exit. Simple wrapper
 around :func:`~os.chdir`. (Contributed by Filipe Laíns in :issue:`25625`)
 
+dataclasses
+-----------
+
+* Change field default mutability check, allowing only defaults which are
+  :term:`hashable` instead of any object which is not an instance of
+  :class:`dict`, :class:`list` or :class:`set`. (Contributed by Eric V. Smith in
+  :issue:`44674`.)
+
 datetime
 --------