Preload security_setting to fix test

app/serializers/pipeline_serializer.rb

@@ -75,3 +75,5 @@ class PipelineSerializer < BaseSerializer
     ]
   end
 end
+
+PipelineSerializer.prepend_if_ee('EE::PipelineSerializer')

ee/app/serializers/ee/pipeline_serializer.rb

+# frozen_string_literal: true
+
+module EE
+  module PipelineSerializer
+    extend ActiveSupport::Concern
+
+    private
+
+    def preloaded_relations
+      relations = super
+
+      project_relation = relations.detect { |item| item.is_a?(Hash) }
+      project_relation[:project].push(:security_setting)
+      relations
+    end
+  end
+end