net/reaver: Update to 1.6.6

From ChangeLog: https://github.com/t6x/reaver-wps-fork-t6x/releases/tag/v1.6.6

• improved bruteforce mode using .wpc save files.
• automatic pixiewps pin retrieval and live injection in current session if pin is cracked before the timeout happens,
• experimental uptime command line switch -u
• lots of bugfixes and improvements

PR: 244892
Submitted by: freebsd@sysctl.cz (maintainer)