chore: test on django 4.0

Author: bertonha

setup.cfg

@@ -12,6 +12,8 @@ classifiers =
 	Framework :: Django :: 2.2
 	Framework :: Django :: 3.0
 	Framework :: Django :: 3.1
+	Framework :: Django :: 3.2
+	Framework :: Django :: 4.0
 	Intended Audience :: Developers
 	License :: OSI Approved :: MIT License
 	Programming Language :: Python

tests/settings.py

@@ -28,3 +28,5 @@
 PUSH_NOTIFICATIONS_SETTINGS = {
 	"WP_CLAIMS": {"sub": "mailto: jazzband@example.com"}
 }
+
+USE_DEPRECATED_PYTZ = True

tests/settings_unique.py

@@ -29,3 +29,5 @@
 	"WP_CLAIMS": {"sub": "mailto: jazzband@example.com"},
 	"UNIQUE_REG_ID": True
 }
+
+USE_DEPRECATED_PYTZ = True

tox.ini

@@ -2,7 +2,7 @@
 skipsdist = True
 usedevelop = true
 envlist =
-    py{36,37,38,39}-dj{22,30,31,32}
+    py{36,37,38,39}-dj{22,30,31,32,40}
     py{38,39}-djmain
     flake8
 
@@ -19,6 +19,7 @@ DJANGO =
     3.0: dj30
     3.1: dj31
     3.2: dj32
+    4.0: dj40
     main: djmain
 
 [testenv]
@@ -36,11 +37,13 @@ deps =
     pytest-cov
     pytest-django
     pywebpush
+    pytz
     djangorestframework==3.11.0
     dj22: Django>=2.2,<3.0
     dj30: Django>=3.0,<3.1
     dj31: Django>=3.1,<3.2
     dj32: Django>=3.2,<3.3
+    dj40: Django>=4.0,<4.1
     djmain: https://github.com/django/django/archive/main.tar.gz
 
 [testenv:flake8]