Use 4.0

Author: hsbt

.github/workflows/deploy.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.4'
+          ruby-version: '4.0'
           bundler-cache: true
       - name: Setup Pages
         id: pages

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "3.4"
+          ruby-version: "4.0"
           bundler-cache: true
       - name: Run RSpec
         run: bundle exec rake