update_goldens.sh not updating inspector goldens

[kenzieschmoll]

There was a recent break to the inspector goldens (fix here). I attempted to run the update_goldens.sh script to update the goldens. The script took an extremely long time to finish running (37 minutes) and it did not update the inspector goldens as expected (it just updated some memory goldens because I'm running on mac and the memory goldens are for linux).

After this, I ran flutter test -j1 --update-goldens test/inspector_service_test.dart from the devtools_app directory, and the inspector golden was updated as expected.