net/freebsd-telnetd: Update to 14.0.6

Version 14.0.6 corrects the filename referanced in the telnetd.8
man page. The upstream commit log:

The patname listed was the path telnetd was installed in FreeBSD
base. Now that it is a stand-alone app, installed through FreeBSD
ports/pkg, update the pathname.

PR: 284006
(cherry picked from commit ef2452dffb16f8637b6f9e7c55369a3effaf87af)