Ruby 3.1 is out \o/

Author: n-rodriguez

.github/workflows/ci.yml

@@ -46,6 +46,7 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
+          - '3.1'
           - '3.0'
           - '2.7'
           - '2.6'
@@ -64,6 +65,8 @@ jobs:
             rails: rails_7.0.1
           - ruby: '3.0'
             rails: rails_5.2.6
+          - ruby: '3.1'
+            rails: rails_5.2.6
 
     steps:
       - name: Checkout