Fix Django classifiers

Getting an error when trying to upload as it stands:

ERROR HTTPError: 400 Bad Request from https://upload.pypi.org/legacy/

'Framework :: Django :: 5' is not a valid classifier.
See https://packaging.python.org/specifications/core-metadata for more information.

pyproject.toml

@@ -22,9 +22,9 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3 :: Only",
     "Framework :: Django",
-    "Framework :: Django :: 3",
-    "Framework :: Django :: 4",
-    "Framework :: Django :: 5",
+    "Framework :: Django :: 4.2",
+    "Framework :: Django :: 5.0",
+    "Framework :: Django :: 5.1",
     "Topic :: Internet :: WWW/HTTP",
     "Topic :: Internet :: WWW/HTTP :: Dynamic Content",
 ]