update linting CI

Author: bckohan

.github/workflows/lint.yml

@@ -9,16 +9,24 @@ jobs:
     strategy:
       matrix:
         # run static analysis on bleeding and trailing edges
-        python-version: [ '3.8', '3.12' ]
+        python-version: [ '3.8', '3.10', '3.12' ]
         django-version:
           - '3.2' # LTS April 2024
           - '4.2' # LTS April 2026
           - '5.0' # April 2025
         exclude:
           - python-version: '3.8'
             django-version: '5.0'
+          - python-version: '3.10'
+            django-version: '5.0'
           - python-version: '3.12'
             django-version: '3.2'
+          - python-version: '3.10'
+            django-version: '3.2'
+          - python-version: '3.8'
+            django-version: '4.2'
+          - python-version: '3.12'
+            django-version: '4.2'
 
     steps:
       - uses: actions/checkout@v4