Fixed #34233 -- Dropped support for Python 3.8 and 3.9.

tests/admin_views/tests.py

@@ -2,14 +2,10 @@ import datetime
 import os
 import re
 import unittest
+import zoneinfo
 from unittest import mock
 from urllib.parse import parse_qsl, urljoin, urlparse
 
-try:
-    import zoneinfo
-except ImportError:
-    from backports import zoneinfo
-
 from django.contrib import admin
 from django.contrib.admin import AdminSite, ModelAdmin
 from django.contrib.admin.helpers import ACTION_CHECKBOX_NAME