Adjust specs for web app metadata fetching

spec/models/remote_storage_authorization_spec.rb

@@ -5,6 +5,10 @@ RSpec.describe RemoteStorageAuthorization, type: :model do
 
   let(:user) { create :user }
 
+  before do
+    allow_any_instance_of(AppCatalog::WebApp).to receive(:update_metadata).and_return(true)
+  end
+
   describe "#create" do
     after(:each) { clear_enqueued_jobs }
     after(:all)  { redis_rs_delete_keys("authorizations:*") }