Quarantine rate_limits_spec on staging

qa/qa/specs/features/api/1_manage/rate_limits_spec.rb

@@ -3,7 +3,7 @@
 require 'airborne'
 
 module QA
-  RSpec.describe 'Manage with IP rate limits', :requires_admin do
+  RSpec.describe 'Manage with IP rate limits', :requires_admin, quarantine: { only: { subdomain: :staging }, issue: 'https://gitlab.com/gitlab-org/gitlab/-/issues/240936', type: :investigating } do
     describe 'Users API' do
       let(:api_client) { Runtime::API::Client.new(:gitlab, ip_limits: true) }
       let(:request) { Runtime::API::Request.new(api_client, '/users') }