Programs such as "ANT RENAMER" or equivalent are made to manage Windows folders, the management of folders in Epdm is somewhat different since it is linked to a SQL database. You have to look at MyPdmTools if there is anything else if not it is possible via the Epdm APIs using the Rename method belonging to the IEdmFolder6 interface.
Of course, before you have to check that you have sufficient rights to be able to rename the files and folders in the Epdm settings.