tools: use find-inactive-collaborators to modify README.md

Update find-inactive-collaborators to move inactive collaborators to the
emeriti section of README.md.

PR-URL: https://github.com/nodejs/node/pull/39825


Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>