- Remove MariaDB 10.0 (removed from ports 2019-04-19)
 - Add MariaDB 10.4 (added to ports 2019-06-30)

PR:		240254
Reported by:	Dries Michiels <driesm michiels gmail com>
Approved by:	portmgr (rene)
Differential Revision:	https://reviews.freebsd.org/D21511