git: 28fbd2825d21..850ef5ae11d6 - vendor/sendmail - vendor branch updated

From: Gregory Neil Shapiro <gshapiro_at_FreeBSD.org>
Date: Wed, 31 Jan 2024 23:39:47 UTC
The branch vendor/sendmail has been updated by gshapiro:

URL: https://cgit.FreeBSD.org/src/log/?id=28fbd2825d21..850ef5ae11d6

850ef5ae11d6 Import sendmail 8.18.1