Merge branch 'pl-spec-model-approval-state-perf' into 'master'

Speed up specs for merge request approval state

See merge request gitlab-org/gitlab!42689

.rubocop_todo.yml

@@ -700,7 +700,6 @@ Rails/SaveBang:
     - 'ee/spec/models/application_setting_spec.rb'
     - 'ee/spec/models/approval_merge_request_rule_spec.rb'
     - 'ee/spec/models/approval_project_rule_spec.rb'
-    - 'ee/spec/models/approval_state_spec.rb'
     - 'ee/spec/models/burndown_spec.rb'
     - 'ee/spec/models/ci/pipeline_spec.rb'
     - 'ee/spec/models/ci/subscriptions/project_spec.rb'