git: c2a80056864d..96ef46e5cff0 - vendor/unbound - vendor branch updated

[Cy Schubert]

The branch vendor/unbound has been updated by cy:

URL: https://cgit.FreeBSD.org/src/log/?id=c2a80056864d..96ef46e5cff0

96ef46e5cff0 unbound: Vendor import 1.21.0