dnsmasq: update to 2.93

dnsmasq: update to 2.93

Changelog: https://github.com/imp/dnsmasq/blob/master/CHANGELOG#L1-L35

Removed upstreamed patches:
- 001-CVE-2026-2291.patch
- 002-CVE-2026-4890.dnsmasq-2.92.patch
- 003-CVE-2026-4891.patch
- 004-CVE-2026-4892.patch
- 005-CVE-2026-4893.patch
- 006-CVE-2026-5172.patch

All other patches rebased.

Build system: x86/64
Build-tested: x86/64-glibc
Run-tested: x86/64-glibc

Signed-off-by: John Audia <therealgraysky@proton.me>
Link: https://github.com/openwrt/openwrt/pull/23669
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>