www/linux-vieb: Update to 12.4.0 (security release)

Release changes: https://github.com/Jelmerro/Vieb/releases/tag/12.4.0
Reported by: portscout!
Security: https://vuxml.freebsd.org/freebsd/aaa060af-88d6-11f0-a294-b0416f0c4c67.html