initial django 4.2a1 testing (#8846)

* initial django 4.2a1 testing

* django 4.2 in classifier

Author: auvipy

setup.py

@@ -94,6 +94,7 @@ def get_version(package):
         'Framework :: Django :: 3.2',
         'Framework :: Django :: 4.0',
         'Framework :: Django :: 4.1',
+        'Framework :: Django :: 4.2',
         'Intended Audience :: Developers',
         'License :: OSI Approved :: BSD License',
         'Operating System :: OS Independent',

tox.ini

@@ -3,8 +3,8 @@ envlist =
        {py36,py37,py38,py39}-django30
        {py36,py37,py38,py39}-django31
        {py36,py37,py38,py39,py310}-django32
-       {py38,py39,py310}-{django40,django41,djangomain}
-       {py311}-{django41,djangomain}
+       {py38,py39,py310}-{django40,django41,django42,djangomain}
+       {py311}-{django41,django42,djangomain}
        base
        dist
        docs
@@ -21,6 +21,7 @@ deps =
         django32: Django>=3.2,<4.0
         django40: Django>=4.0,<4.1
         django41: Django>=4.1,<4.2
+        django42: Django>=4.2a1,<5.0
         djangomain: https://github.com/django/django/archive/main.tar.gz
         -rrequirements/requirements-testing.txt
         -rrequirements/requirements-optionals.txt