[v16.x backport] deps: upgrade npm to 7.20.3
Updates npm from 7.19.1 to 7.20.3.
Refs: https://github.com/nodejs/node/pull/39403 PR-URL: https://github.com/nodejs/node/pull/39579 Reviewed-By: Myles Borins myles.borins@gmail.com Reviewed-By: Beth Griggs bgriggs@redhat.com
This was created by cherry-picking 65234bbc and 317e71b1 and then squashing so that we skip having the duplicate file in the git history.