doc: add devsnek to collaborators

PR-URL: https://github.com/nodejs/node/pull/18679
Fixes: https://github.com/nodejs/node/issues/18544
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>

README.md

@@ -340,6 +340,8 @@ For more information about the governance of the Node.js project, see
 **Daniel Bevenius** <daniel.bevenius@gmail.com>
 * [DavidCai1993](https://github.com/DavidCai1993) -
 **David Cai** <davidcai1993@yahoo.com> (he/him)
+* [devsnek](https://github.com/devsnek) -
+**Gus Caplan** <me@gus.host> (he/him)
 * [edsadr](https://github.com/edsadr) -
 **Adrian Estrada** <edsadr@gmail.com> (he/him)
 * [eljefedelrodeodeljefe](https://github.com/eljefedelrodeodeljefe) -