dns/wdns: upgrade to version 0.12.0

0.12.0:

• Add EDNS output to wdns_message_to_str().
• Fix memory leak triggered by multiple OPT records in messages.
• Fixes multiple bugs in base32 encoding, NSEC bitmap parsing, and HTTPS svcparam parsing.
• Fix out of bounds memory write in wdns_str_to_name.
• Fix handling of no address for client subnets.

Bump PORTREVISION of dependent ports.

MFH: 2023Q3
Sponsored by: DomainTools LLC