Make label API spec independent of order

spec/requests/api/labels_spec.rb

@@ -22,8 +22,7 @@ describe API::API, api: true  do
       expect(response).to have_http_status(200)
       expect(json_response).to be_an Array
       expect(json_response.size).to eq(2)
-      expect(json_response.first['name']).to eq(group_label.name)
-      expect(json_response.second['name']).to eq(label1.name)
+      expect(json_response.map { |l| l['name'] }).to match_array([group_label.name, label1.name])
     end
   end