bump up ruby version

Author: Zhenye-Na

.github/workflows/pages-deploy.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Setup Ruby
         uses: actions/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 3.2
 
       - name: Bundle Caching
         uses: actions/cache@v2