Bumps django to 4.0 and fixes associated issues

src/documents/tests/test_consumer.py

@@ -5,6 +5,11 @@ import tempfile
 from unittest import mock
 from unittest.mock import MagicMock
 
+try:
+    import zoneinfo
+except ImportError:
+    import backports.zoneinfo as zoneinfo
+
 from django.conf import settings
 from django.test import override_settings
 from django.test import TestCase
@@ -341,7 +346,7 @@ class TestConsumer(DirectoriesMixin, TestCase):
 
         self._assert_first_last_send_progress()
 
-        self.assertEqual(document.created.tzinfo.zone, "America/Chicago")
+        self.assertEqual(document.created.tzinfo, zoneinfo.ZoneInfo("America/Chicago"))
 
     @override_settings(PAPERLESS_FILENAME_FORMAT=None)
     def testDeleteMacFiles(self):