Update workflow template

Author: mbg

pr-checks/checks/rubocop-multi-language.yml

@@ -5,7 +5,7 @@ operatingSystems: ["ubuntu"]
 versions: ["default"]
 steps:
   - name: Set up Ruby
-    uses: ruby/setup-ruby@a4effe49ee8ee5b8b5091268c473a4628afb5651 # v1.245.0
+    uses: ruby/setup-ruby@472790540115ce5bd69d399a020189a8c87d641f # v1.247.0
     with:
       ruby-version: 2.6
   - name: Install Code Scanning integration