Use Ruby 3.4.6

Author: hsbt

.github/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@0481980f17b760ef6bca5e8c55809102a0af1e5a # v1.263.0
         with:
-          ruby-version: 3.2.2
+          ruby-version: 3.4.6
           bundler-cache: true
           working-directory: guides