Use keyword arguments for ApplicationService calls

Not all services are using keywords, which breaks those calls in Ruby 3

app/services/app_catalog_manager/update_metadata.rb

@@ -3,7 +3,7 @@ require "down"
 
 module AppCatalogManager
   class UpdateMetadata < AppCatalogManagerService
-    def initialize(app)
+    def initialize(app:)
       @app = app
     end