In commit-queue.sh, the assignment to `commits` will succeed and the
script will continue if one of the two `git` commands fails, even with
`-e` set. Split it into three separate assignments so that failures in
the `git` commands will be clearly logged and cause the script to exit
with a failure status code.
PR-URL: https://github.com/nodejs/node/pull/41340
Reviewed-By: Tierney Cyren <hello@bnb.im>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>