deps: upgrade npm to 7.18.1

PR-URL: https://github.com/nodejs/node/pull/39065


Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ruy Adorno <ruyadorno@github.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>