merge in 3.12 CI changes from upstream

Author: bckohan

.github/workflows/test.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         # run static analysis on bleeding and trailing edges
-        python-version: [ '3.7', '3.11' ]
+        python-version: [ '3.7', '3.12' ]
         django-version:
           - 'Django~=3.2.0' # LTS April 2024
           - 'Django~=4.1.0' # December 2023
@@ -19,7 +19,7 @@ jobs:
             django-version: 'Django~=4.1.0'
           - python-version: '3.7'
             django-version: 'Django~=4.2.0'
-          - python-version: '3.11'
+          - python-version: '3.12'
             django-version: 'Django~=3.2.0'
 
     steps: