Adjust CI combinations

Wagtail 4.1 is older so not compatible with Django 4.2 and 5.0, but I want to include it in tests to check upgrade combinations

.github/workflows/ci.yml

@@ -51,13 +51,14 @@ jobs:
       matrix:
         python: ['3.10', '3.11']
         django: ['4.2', '5.0']
-        wagtail: ['4.1', '5.2', '6.1']
-        exclude:
-          - wagtail: '4.1'
-            django: '4.2'
-          - wagtail: '4.2'
-            django: '4.2'
+        wagtail: ['5.2', '6.1']
         include:
+          - wagtail: '4.1'
+            django: '3.2'
+            python: '3.10'
+          - wagtail: '4.1'
+            django: '4.1'
+            python: '3.10'
           - wagtail: '5.2'
             django: '5.0'
             python: '3.12'
@@ -84,14 +85,17 @@ jobs:
       matrix:
         python: ['3.10', '3.11']
         django: ['4.2', '5.0']
-        wagtail: ['4.1', '5.2', '6.1']
+        wagtail: ['5.2', '6.1']
         postgres: ['12.17', '16.1']
-        exclude:
-          - wagtail: '4.1'
-            django: '4.2'
-          - wagtail: '4.2'
-            django: '4.2'
         include:
+          - wagtail: '4.1'
+            django: '3.2'
+            postgres: '16.1'
+            python: '3.10'
+          - wagtail: '4.1'
+            django: '4.1'
+            postgres: '16.1'
+            python: '3.10'
           - wagtail: '5.2'
             django: '5.0'
             postgres: '12.17'