Update ruby.yml

Author: SleeplessByte

.github/workflows/ruby.yml

@@ -8,10 +8,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v1
-      - name: Set up Ruby 3.1
-        uses: actions/setup-ruby@v1
+      - name: Set up Ruby 3.3
+        uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.1.x
+          ruby-version: 3.3.x
       - name: Build and test with Rake
         run: |
           sudo apt-get update