chore(deps): update dependency ruby to v4

Author: renovate[bot]

.github/workflows/danger.yml

@@ -19,7 +19,7 @@ jobs:
       - name: ruby setup
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.4.8
+          ruby-version: 4.0.0
           bundler-cache: true
       - name: Checkout code
         uses: actions/checkout@v6