Update supported versions.

Author: FlipperPA

setup.py

@@ -25,14 +25,13 @@
         "Operating System :: OS Independent",
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3 :: Only",
         "Framework :: Django",
-        "Framework :: Django :: 2",
         "Framework :: Django :: 3",
         "Framework :: Django :: 4",
         "Topic :: Internet :: WWW/HTTP",