Fix rubocop offense in pipeline build seed class

lib/gitlab/ci/pipeline/seed/build.rb

@@ -5,9 +5,7 @@ module Gitlab
         class Build < Seed::Base
           include Gitlab::Utils::StrongMemoize
 
-          attr_reader :pipeline, :attributes
-
-          delegate :dig, to: :attributes
+          delegate :dig, to: :@attributes
 
           def initialize(pipeline, attributes)
             @pipeline = pipeline
@@ -23,6 +21,16 @@ module Gitlab
             @attributes.merge!(user: current_user)
           end
 
+          def included?
+            strong_memoize(:inclusion) do
+              only_specs = Gitlab::Ci::Build::Policy.fabricate(@only)
+              except_specs = Gitlab::Ci::Build::Policy.fabricate(@except)
+
+              only_specs.all? { |spec| spec.satisfied_by?(@pipeline) } &&
+                except_specs.none? { |spec| spec.satisfied_by?(@pipeline) }
+            end
+          end
+
           def attributes
             @attributes.merge(
               pipeline: @pipeline,
@@ -34,16 +42,6 @@ module Gitlab
             )
           end
 
-          def included?
-            strong_memoize(:inclusion) do
-              only_specs = Gitlab::Ci::Build::Policy.fabricate(@only)
-              except_specs = Gitlab::Ci::Build::Policy.fabricate(@except)
-
-              only_specs.all? { |spec| spec.satisfied_by?(pipeline) } &&
-                except_specs.none? { |spec| spec.satisfied_by?(pipeline) }
-            end
-          end
-
           def to_resource
             ::Ci::Build.new(attributes)
           end