Source upgrade releng/13.1 to releng/13.2 with gitup

From: George Mitchell <george+freebsd_at_m5p.com>
Date: Tue, 15 Aug 2023 01:24:42 UTC
So I'm going to update my /usr/src tree and make buildworld etc., etc.,
but as a gitup user do I just change "releng/13.1" to "releng/13.2" in
my /usr/local/etc/gitup.conf and then "gitup release"?       -- George