Update workflow

Author: danielfriis

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ['3.1', '3.2', '3.3']
+        ruby: ['3.2', '3.3']
 
     steps:
       - name: Checkout code