Update ruby/setup-ruby action to v1.281.0 (#5272)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/deploy-docs.yml

@@ -37,7 +37,7 @@ jobs:
           cache: npm
           cache-dependency-path: package-lock.json
       - name: Install Ruby
-        uses: ruby/setup-ruby@d5f787ce339eb0767271bc01d922e85644c2c8ab # v1.280.0
+        uses: ruby/setup-ruby@675dd7ba1b06c8786a1480d89c384f5620a42647 # v1.281.0
         with:
           bundler-cache: true
       - name: Install JDKs