Fix ci_trigger_request factory

spec/factories/ci/trigger_requests.rb

@@ -3,7 +3,7 @@
 FactoryGirl.define do
   factory :ci_trigger_request, class: Ci::TriggerRequest do
     factory :ci_trigger_request_with_variables do
-      trigger :ci_trigger
+      trigger factory: :ci_trigger
       variables do
         {