Fix an order-dependent spec failure in spec/migrations/schedule_sync_issuables_state_id_spec.rb

spec/migrations/schedule_runners_token_encryption_spec.rb

 require 'spec_helper'
 require Rails.root.join('db', 'post_migrate', '20181121111200_schedule_runners_token_encryption')
-describe ScheduleRunnersTokenEncryption, :migration do
+describe ScheduleRunnersTokenEncryption, :migration, :sidekiq do
   let(:settings) { table(:application_settings) }
   let(:namespaces) { table(:namespaces) }
   let(:projects) { table(:projects) }

spec/migrations/schedule_sync_issuables_state_id_spec.rb

@@ -3,7 +3,7 @@
 require 'spec_helper'
 require Rails.root.join('db', 'post_migrate', '20190214112022_schedule_sync_issuables_state_id.rb')
-describe ScheduleSyncIssuablesStateId, :migration do
+describe ScheduleSyncIssuablesStateId, :migration, :sidekiq do
   let(:namespaces) { table(:namespaces) }
   let(:projects) { table(:projects) }
   let(:merge_requests) { table(:merge_requests) }