git: d6f77d3cfa8e..51c823ac2777 - vendor/libarchive - vendor branch updated

From: Martin Matuska <mm_at_FreeBSD.org>
Date: Mon, 29 Apr 2024 07:23:54 UTC
The branch vendor/libarchive has been updated by mm:

URL: https://cgit.FreeBSD.org/src/log/?id=d6f77d3cfa8e..51c823ac2777

51c823ac2777 Cherry-pick commits from libarchive to vendor/libarchive