* After the ticket has been saved
* @since 1.0.0
* @param (int)         Ticket ID
* @param (int)         Answer ID
* @param (array)     POST data

If an anser has been submitted by an agent, this action will be performed. It gives you the ticket ID, the answer ID (both equal to the corresponding post IDs, answers do also have the post type ticket) as well as the $_POST data.