dns/powerdns-recursor: Update to PowerDNS Recursor 4.8.4

This release fixes CVE-2023-26437 (see URL) and only that.

PR: 270537
MFH: 2023Q1
Security: dc33795f-ced7-11ed-b1fe-6805ca2fa271
Changes: https://docs.powerdns.com/recursor/changelog/4.8.html#change-4.8.4
(cherry picked from commit 431005203b17f911041d7bdcd76b38bf5f45bd75)