build: fix label-pr workflow

PR-URL: https://github.com/nodejs/node/pull/38399


Reviewed-By: Zijian Liu <lxxyxzj@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>