Replace pytest-freezegun with pytest-freezer.

Author: freakboy3742

changes/2171.misc.rst

@@ -0,0 +1 @@
+The use of ``pytest-freezegun`` was replaced with ``pytest-freezer``, due to lack of maintenance on the freezegun plugin.

core/setup.cfg

@@ -67,7 +67,7 @@ dev =
     pre-commit == 3.0.2
     pytest == 7.3.1
     pytest-asyncio == 0.21.0
-    pytest-freezegun == 0.4.2
+    pytest-freezer == 0.4.8
     setuptools-scm[toml] == 7.0.5
     tox == 4.3.5
 docs =