Use have_gitlab_http_status in runner_spec

spec/requests/api/runner_spec.rb

@@ -1734,7 +1734,7 @@ describe API::Runner, :clean_gitlab_redis_shared_state do
               end
 
               it 'download artifacts' do
-                expect(response).to have_http_status(200)
+                expect(response).to have_gitlab_http_status(200)
                 expect(response.headers.to_h).to include download_headers
               end
             end