update names from Workday

[phette23]

In addition to updating patron records with a current prox number from TouchNet, we should also update their names from the Workday data so preferred name changes migrate to Koha automatically. The prox update script should probably just become a general update script intended to be run on a very regular basis. For names, it would be good to allow a dry run to see how many changes we're making and whether there are potential problems. We could start with staff only and add students later, too.