dns/dnsmasq-devel: update to v2.92test3 + 1 cherry-pick

Changes (newest first) since v2.92test2, by Simon Kelley unless
noted otherwise:

• 95b74a7 2025-04-18 | Fix copy 'n paste error in DBUS server-statistics code.
• ae57f84 2025-04-18 | Do a better job of 942a35f[...] (tag: v2.92test3)
• 0620309 2025-04-16 | Revise negative DNS caching to better comply with RFC2308.
• 942a35f 2025-04-16 | Silence compiler warnings. [Opty]

MFH: 2025Q2