Extra groups or removed users don't get synced

Hi,

I've been trying to deploy your application through the provided helm chart, but while it created all the users in my GitHub team on first run, they never get added to the groups I supplied afterwards (as I forgot on first deploy). Upon deletion of the chart, the application seems to remove the ssh keys, but it leaves the users around.
This has as affect that users get left behind on the system of course, but also that upon the next sync/start it finds the user and does not do a full sync of the groups.