doc: add jdalton to collaborators

PR-URL: #20968
Fixes: #20828
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Yuta Hiroto <hello@hiroppy.me>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Shingo Inoue <leko.noor@gmail.com>

README.md

@@ -397,6 +397,8 @@ For more information about the governance of the Node.js project, see
 **Jason Ginchereau** <jasongin@microsoft.com>
 * [jbergstroem](https://github.com/jbergstroem) -
 **Johan Bergström** <bugs@bergstroem.nu>
+* [jdalton](https://github.com/jdalton) -
+**John-David Dalton** <john.david.dalton@gmail.com>
 * [jhamhader](https://github.com/jhamhader) -
 **Yuval Brik** <yuval@brik.org.il>
 * [jkrems](https://github.com/jkrems) -