git: b89a9714932b..bbf0e6b90032 - vendor/xz - vendor branch updated

From: Xin LI <delphij_at_FreeBSD.org>
Date: Wed, 16 Nov 2022 07:28:29 UTC
The branch vendor/xz has been updated by delphij:

URL: https://cgit.FreeBSD.org/src/log/?id=b89a9714932b..bbf0e6b90032

bbf0e6b90032 Vendor import of xz-5.2.8 (trimmed).