ci: add Ruby 3.2 coverage

Also:

- matrix uses explicit includes instead of excludes
- sort order of tests is AS first, Ruby second
- give tests a more descriptive name

Author: flavorjones

.github/workflows/ci.yml

@@ -20,46 +20,35 @@ on:
 
 jobs:
   test:
+    name: "activesupport ${{ matrix.activesupport }} / ruby ${{ matrix.ruby }}"
     runs-on: ubuntu-20.04
     strategy:
       fail-fast: false
       matrix:
-        ruby:
-          - '3.1'
-          - '3.0'
-          - '2.7'
-          - '2.6'
-          - '2.5'
-          - ruby-head
-          - jruby
-        activesupport:
-          - '7.0'
-          - '6.1'
-          - '6.0'
-          - '5.2'
-        exclude:
-          - ruby: '2.5'
-            activesupport: '7.0'
-          - ruby: '2.6'
-            activesupport: '7.0'
-          - ruby: '2.7'
-            activesupport: '5.2'
-          - ruby: '3.0'
-            activesupport: '5.2'
-          - ruby: '3.0'
-            activesupport: '6.0'
-          - ruby: '3.1'
-            activesupport: '5.2'
-          - ruby: '3.1'
-            activesupport: '6.0'
-          - ruby: ruby-head
-            activesupport: '5.2'
-          - ruby: ruby-head
-            activesupport: '6.0'
-          - ruby: ruby-head
-            activesupport: '6.1'
-          - ruby: jruby
-            activesupport: '7.0'
+        include:
+          # rails 5.2
+          - { activesupport: "5.2", ruby: "2.5" }
+          - { activesupport: "5.2", ruby: "2.6" }
+          # rails 6.0
+          - { activesupport: "6.0", ruby: "2.5" }
+          - { activesupport: "6.0", ruby: "2.6" }
+          - { activesupport: "6.0", ruby: "2.7" }
+          # rails 6.1
+          - { activesupport: "6.1", ruby: "2.5" }
+          - { activesupport: "6.1", ruby: "2.6" }
+          - { activesupport: "6.1", ruby: "2.7" }
+          - { activesupport: "6.1", ruby: "3.0" }
+          - { activesupport: "6.1", ruby: "3.1" }
+          - { activesupport: "6.1", ruby: "3.2" }
+          - { activesupport: "6.1", ruby: "ruby-head" }
+          - { activesupport: "6.1", ruby: "jruby" }
+          # rails 7.0
+          - { activesupport: "7.0", ruby: "2.7" }
+          - { activesupport: "7.0", ruby: "3.0" }
+          - { activesupport: "7.0", ruby: "3.1" }
+          - { activesupport: "7.0", ruby: "3.2" }
+          - { activesupport: "7.0", ruby: "ruby-head" }
+          - { activesupport: "7.0", ruby: "jruby" }
     env:
       BUNDLE_GEMFILE: gemfiles/active_support_${{ matrix.activesupport }}.gemfile
     steps: