Test with Ruby 3.1

Author: rafaelfranca

.github/workflows/ci.yml

@@ -6,8 +6,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ '2.7', '3.0.2', 'head' ]
+        ruby: [ '2.7', '3.0.2', '3.1', 'head' ]
         rails: [ '6.0', '6.1', '7.0', 'edge' ]
+        exclude:
+          - ruby: '3.1'
+            rails: '6.0'
+          - ruby: '3.1'
+            rails: '6.1'
 
     env:
       RAILS_VERSION: ${{ matrix.rails }}