dns/wdns: Upgrade to 0.13.0
0.13.0:
- Remove strict aliasing violations.
- Replace Python dependency with shell script.
- Fix various off-by-one errors in bounds checking.
- Various small build and test fixes.
MFH: 2026Q3
Sponsored by: DomainTools LLC
(cherry picked from commit 8a8a26d3b2c0dcdc01a60e11a07ef069338ac1ab)