chore(deps): update ruby/setup-ruby action to v1.220.0

Author: my-renovate[bot]

.github/workflows/gh-pages-build.yml

@@ -47,7 +47,7 @@ jobs:
           mkdir public
 
       - name: Setup Ruby
-        uses: ruby/setup-ruby@f2f42b7848feff522ffa488a5236ba0a73bccbdd # v1.219.0
+        uses: ruby/setup-ruby@28d088d34a0b0b7ba0823b7952c77004560a3a6f # v1.220.0
         with:
           ruby-version: 3.2
           bundler-cache: true