Chore: Add ruby 3.3 and fix workflow

Author: mdp

.github/workflows/test.yaml

@@ -4,7 +4,7 @@ on:
   push:
     branches: [ main ]
   pull_request:
-    types: [opened, reopened, synchronize]
+    branches: [ main ]
 
 jobs:
   test:
@@ -13,8 +13,7 @@ jobs:
 
     strategy:
       matrix:
-        ruby-version: ['3.2', '3.0', '2.7', '2.3', truffleruby-head]
-
+        ruby-version: ['3.3', '3.2', '3.0', '2.7', '2.3', truffleruby-head]
     steps:
       - uses: actions/checkout@v4
       - name: Set up Ruby ${{ matrix.ruby-version }}