git: 401770e05c71..28df100aa0a9 - vendor/unbound - vendor branch updated

From: Cy Schubert <cy_at_FreeBSD.org>
Date: Wed, 20 Sep 2023 14:36:11 UTC
The branch vendor/unbound has been updated by cy:

URL: https://cgit.FreeBSD.org/src/log/?id=401770e05c71..28df100aa0a9

28df100aa0a9 vendor/unbound: ignore *~