Update hickory-proto 0.25.2 → 0.26.1

[cfsmp3]

hickory-proto 0.25.2 has two open RustSec advisories, both fixed in 0.26.1:

• RUSTSEC-2026-0119: CPU exhaustion during message encoding due to O(n²) name compression
• RUSTSEC-2026-0118: NSEC3 closest-encloser proof validation enters unbounded loop on cross-zone responses

Breaking changes in hickory-proto 0.26.1 that affect dhcproto:

• EncodeMode was removed. BinEncoder::with_offset no longer takes an EncodeMode parameter.
• Name::emit_as_canonical was removed. Canonical encoding is now controlled via BinEncoder::set_canonical_form(true) followed by the standard BinEncodable::emit.
• BinDecodable::read now returns hickory_proto::serialize::binary::DecodeError instead of ProtoError. Added a From variant to dhcproto::error::DecodeError.

[leshow]

thank you!