With the add-on ZipUpdate you can select a directory to put in all your ZIP add-ons and reinstall them all with one click under File/External Data/Reinstall ZIP Add-ons.
For this add-on to work properly it cannot be in the same directory as the other add-ons that are to be reinstalled.

This add-on updates existing add-ons to apply changes to their versions and scripts while also adding any new add-ons found in the directory.