Its been deprecated for awhile. You shouldn't need it anymore as CB Auto Actions can be used to synchronize with any external system using Query actions for external databases, Code actions for custom PHP solutions, and Request actions for calling external HTTP API endpoints.
CiviCRM API v4 has a PHP API you'd be able to include that into a Code action using PHP and call their API directly to synchronize whatever you like whenever you like (e.g. after profile update).
docs.civicrm.org/dev/en/latest/api/v4/usage/#php
CiviCRM API v3 provides REST endpoints that you could use with a Request action. This probably being the easiest approach.
docs.civicrm.org/dev/en/latest/api/v3/rest/
It's unlikely we'll update it and will discontinue it entirely with CB 3.x (remove it from our site). It won't show in the list of CB plugins either as it's a Joomla plugin, which won't install on Joomla 4. You're welcome to update it as needed as well.
krileon
