meta: add `typings` to label-pr-config

PR-URL: https://github.com/nodejs/node/pull/40401


Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Zijian Liu <lxxyxzj@gmail.com>