Update dependency ruby to v4

Author: renovate[bot]

.github/workflows/test.yaml

@@ -21,7 +21,7 @@ jobs:
           persist-credentials: false
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.0.2
+          ruby-version: 4.0.1
           bundler-cache: true
       - name: Test the action
         uses: ./