Bump __FreeBSD_version after SA-14:23, SA-14:24,
SA-14:25.

Approved by:	re (implicit)
Sponsored by:	The FreeBSD Foundation


git-svn-id: svn+ssh://svn.freebsd.org/base/head@274162 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f