doc: add cola119 to collaborators

Fixes: nodejs/node#44123

PR-URL: nodejs/node#44248
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

README.md

@@ -296,6 +296,8 @@ For information about the governance of the Node.js project, see
   **Colin Ihrig** <<cjihrig@gmail.com>> (he/him)
 * [codebytere](https://github.com/codebytere) -
   **Shelley Vohr** <<shelley.vohr@gmail.com>> (she/her)
+* [cola119](https://github.com/cola119) -
+  **Kohei Ueno** <<kohei.ueno119@gmail.com>> (he/him)
 * [danbev](https://github.com/danbev) -
   **Daniel Bevenius** <<daniel.bevenius@gmail.com>> (he/him)
 * [danielleadams](https://github.com/danielleadams) -