et-mgmt/zabbix74-server: fix mariadb dependencies

Since database/mariadb105-server and databases/mariadb106-server
are now removed from ports, zabbix74-server cannot be built with
mariadb as database.
This fix this issue and add all mariadb versions supported by
Mk/Uses/mysql.mk

PR: 297242
Approved by: maintainer timeout (otis)
Sponsored by: NBER
Sponsored by: Klara, Inc.