dns/powerdns: update to 4.6.3

ChangeLog:
https://blog.powerdns.com/2022/07/13/powerdns-authoritative-server-4-6-3/

PR: 265268
Reported by: tremere@cainites.net (maintainer)
MFH: 2022Q3 (bugfix release)

(cherry picked from commit 1b9e9a25804e2afb27a8fcdcf7113c06fc4cadc9)