tools: update dmn to 2.0.0

New version of dmn with better support for case-sensitive file systems.
Use it in the update-* scripts.

PR-URL: https://github.com/nodejs/node/pull/22733


Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>