Quarantine spec that fails for graphql limit

Relates to https://gitlab.com/gitlab-org/gitlab/-/issues/333845

ee/spec/requests/api/graphql/mutations/issues/promote_to_epic_spec.rb

@@ -95,7 +95,7 @@ RSpec.describe 'Setting the epic of an issue' do
         new_epic_group.add_developer(current_user)
       end
 
-      it 'promotes the issue to epic' do
+      it 'promotes the issue to epic', quarantine: 'https://gitlab.com/gitlab-org/gitlab/-/issues/333845' do
         post_graphql_mutation(mutation, current_user: current_user)
 
         expect(response).to have_gitlab_http_status(:success)