dns/kadnode: Update 2.4.1 => 2.4.3
While here, convert pkg-message to UCL format.
Changelog:
https://github.com/mwarning/KadNode/blob/v2.4.3/changelog
PR: 298111
Reported by: Moritz Warning <moritzwarning@web.de> (maintainer)
Approved by: osa, vvd (Mentors, implicit)