CI/CD: Django 5.0 release

(Had already been testing against 5.0
pre-release builds.)

tox.ini

@@ -5,12 +5,14 @@ envlist =
     # Factors: django-python-extras
     # Test lint, docs, earliest/latest Django first, to catch most errors early...
     lint
-    django42-py311-all
+    django50-py312-all
     django30-py37-all
     docs
     # ... then test all the other supported combinations:
+    # Django 5.0: Python 3.10, 3.11, and 3.12
+    django50-py{310,311}-all
     # Django 4.2: Python 3.8, 3.9, 3.10, 3.11
-    django42-py{38,39,310,py38,py39}-all
+    django42-py{38,39,310,311,py38,py39}-all
     # Django 4.1: Python 3.8, 3.9, 3.10
     django41-py{38,39,310,py38,py39}-all
     # Django 4.0: Python 3.8, 3.9, 3.10
@@ -22,12 +24,12 @@ envlist =
     # Django 3.0: Python 3.6 (eol 2021-12-23), 3.7, 3.8, 3.9 (added in 3.0.11)
     django30-py{38,39,py38,py39}-all
     # ... then prereleases (if available) and current development:
-    # Django 5.0 alpha: Python 3.10, 3.11, 3.12
-    django50-py{310,311,312}-all
-    # Django 5.1 dev: Python 3.10+
+    # Django 5.1 alpha: Python 3.10, 3.11, and 3.12
+    #django51-py{310,311,312}-all
+    # Django 5.1 dev: Python 3.10, 3.11, and 3.12
     djangoDev-py{310,311,312}-all
     # ... then partial installation (limit extras):
-    django42-py311-{none,amazon_ses,postal,resend}
+    django50-py312-{none,amazon_ses,postal,resend}
 # tox requires isolated builds to use pyproject.toml build config:
 isolated_build = True