security/teleport: Deprecate and set expiration date to 2023-03-31
4.x is no longer supported upstream and users are recommended
to upgrade. Work is being done to bring Teleport up to date but for
now we're at 5.x which is still old but supports migration from 4.x.
For more details regarding migration please refer to
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=267052
PR: 268604
Reported by: Michael Reim <kraileth@elderlinux.org>