let's not skip the pytz test - it should always be executed when testing against Django 4

requirements/requirements-testing.txt

@@ -5,3 +5,4 @@ pytest-django>=4.5.2,<5.0
 importlib-metadata<5.0
 # temporary pin of attrs
 attrs==22.1.0
+pytz

tests/test_fields.py

@@ -1625,7 +1625,6 @@ class TestCustomTimezoneForDateTimeField(TestCase):
         assert rendered_date == rendered_date_in_timezone
 
 
-@pytest.mark.skipif(condition=pytz is None, reason="pytz is not available.")
 @pytest.mark.skipif(
     condition=django.VERSION >= (5,),
     reason="Django 5.0 has removed pytz; this test should eventually be able to get removed.",

tox.ini

@@ -17,7 +17,6 @@ setenv =
        PYTHONWARNINGS=once
 deps =
         django42: Django>=4.2,<5.0
-        django42: pytz
         django50: Django>=5.0,<5.1
         django51: Django>=5.1,<5.2
         django52: Django>=5.2,<6.0