The busl license is used by sysutils/terraform.
See the license terms:
https://mariadb.com/bsl11/
Commit message:
Author: Gabriel M. Dutra <dutra@FreeBSD.org>
Date: Tue Feb 6 23:53:05 2024 -0300
Mk/bsd.licenses.db.mk: Add Business Source License (BUSL-1.1)
Business Source License is a trademark of MariaDB plc.
https://mariadb.com/bsl11/
Approved by: dbaio(mentor),garga(mentor)
Differential Revision: https://reviews.freebsd.org/D43777