Use current ruby version for baseline tests

Author: schurzi

.github/workflows/baseline-test.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby-version: ['3.0', '3.1']
+        ruby-version: ['3.1', '3.2', '3.3']
 
     steps:
     - uses: actions/checkout@v4