Fix Ruby 3.3->3.2 mismatch (#5758)

Author: lloeki

utils/build/virtual_machine/weblogs/ruby/test-app-ruby-multicontainer/nginx.conf

@@ -13,7 +13,7 @@ http {
         server ruby_3_4:18080;
     }
     upstream ruby_3_3_app {
-        server ruby_3_2:18080;
+        server ruby_3_3:18080;
     }
     upstream ruby_3_2_app {
         server ruby_3_2:18080;