[dns] DANE support

[drzraf]

Follow-up of my comment at https://github.com/Fyrd/caniuse/pull/5421#issuecomment-1572895039

I think DNSSEC introduced in 2020 page would better be reused/extended to summarize DNSSEC/DoH/DoT status.

DNSSEC itself is barely a topic for browsers which care more about:

• how do I resolve (network-level privacy, or possibly DNS-provider-privacy)? = DoH/DoT
• what do I do with DNS answer? (if DNSSEC, show a green lock for example), if DANE (skip the CA validation and improve TLS negociation for example)

This PR is specifically interested in mentioning actual information regarding DANE support (or lack of) by browsers.