Update CI matrix

Author: byroot

.github/workflows/ci.yml

@@ -6,13 +6,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ '2.7', '3.0', '3.1', '3.2', 'head' ]
-        rails: [ '6.1', '7.0', '7.1', 'edge' ]
-        exclude:
-          - ruby: '3.1'
-            rails: '6.1'
-          - ruby: '3.2'
+        ruby: [ '3.1', '3.2', '3.3', 'head' ]
+        rails: [ '7.0', '7.1', 'edge' ]
+        include:
+          - ruby: '2.7'
             rails: '6.1'
+          - ruby: '3.0'
+            rails: '7.0'
 
     env:
       RAILS_VERSION: ${{ matrix.rails }}