git: 3c540f969430..8b3c99225118 - vendor/libarchive - vendor branch updated

From: Martin Matuska <mm_at_FreeBSD.org>
Date: Mon, 21 Feb 2022 11:04:44 UTC
The branch vendor/libarchive has been updated by mm:

URL: https://cgit.FreeBSD.org/src/log/?id=3c540f969430..8b3c99225118

8b3c99225118 Update vendor/libarchive to libarchive/libarchive@1271f775d