dns/p5-Net-DNS-ZoneFile-Fast: Mark DEPRECATED

• Switch to DISTVERSION while I am here
• Fix fetch
• Set EXPIRATION_DATE 2026-10-23
• Pet portclippy
• Upstream module marked obsolete by its author as of 1.27
• Net::DNS::ZoneFile (merged into dns/p5-Net-DNS, already a dependency of this port) is the maintained replacement.
• No consumers in the tree