git: 1a63323d17fe..aaf1213c6f70 - vendor/bc - vendor branch updated

From: Stefan Eßer <se_at_FreeBSD.org>
Date: Mon, 06 Feb 2023 21:30:21 UTC
The branch vendor/bc has been updated by se:

URL: https://cgit.FreeBSD.org/src/log/?id=1a63323d17fe..aaf1213c6f70

aaf1213c6f70 vendor/bc: import version 6.2.4