git: 80517d0d48d9..a5913a473bb0 - vendor/libarchive - vendor branch updated

From: Martin Matuska <mm_at_FreeBSD.org>
Date: Thu, 07 Sep 2023 14:22:39 UTC
The branch vendor/libarchive has been updated by mm:

URL: https://cgit.FreeBSD.org/src/log/?id=80517d0d48d9..a5913a473bb0

a5913a473bb0 Update vendor/libarchive to libarchive/libarchive@1b4e0d0f9