Legacy:
Workgroup geodatabases are managed and upgraded from ArcGIS Desktop. They cannot be upgraded beyond 10.8.1. Workgroup geodatabase support ends when ArcGIS Desktop support ends.
You can use workgroup geodatabases with ArcGIS Server sites until that time, but you are encouraged to migrate them to enterprise geodatabases. See Workgroup geodatabases in the ArcGIS Server help for instructions.