sysutils/vm-bhyve: Update to 1.7.2

Changes: https://github.com/freebsd/vm-bhyve/releases/tag/v1.7.1
Changes: https://github.com/freebsd/vm-bhyve/releases/tag/v1.7.2
Approved by: driesm (maintainer)
Differential Revision: https://reviews.freebsd.org/D55841