meta: move Glen Keane to Collaborator Emeritus

In email, Glen confirmed that he is happy to move to Emeritus. He also
informed me that his handle is no longer thekemkid and is now glentiki.
At his request, I've updated the handle in the README in addition to
moving him to Emeritus.

PR-URL: #31993
Reviewed-By: Myles Borins <myles.borins@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: Trott

README.md

@@ -411,8 +411,6 @@ For information about the governance of the Node.js project, see
 **Michaël Zasso** <targos@protonmail.com> (he/him)
 * [thefourtheye](https://github.com/thefourtheye) -
 **Sakthipriyan Vairamani** <thechargingvolcano@gmail.com> (he/him)
-* [thekemkid](https://github.com/thekemkid) -
-**Glen Keane** <glenkeane.94@gmail.com> (he/him)
 * [TimothyGu](https://github.com/TimothyGu) -
 **Tiancheng "Timothy" Gu** <timothygu99@gmail.com> (he/him)
 * [tniessen](https://github.com/tniessen) -
@@ -460,6 +458,8 @@ For information about the governance of the Node.js project, see
 **Alexander Makarenko** <estliberitas@gmail.com>
 * [firedfox](https://github.com/firedfox) -
 **Daniel Wang** <wangyang0123@gmail.com>
+* [glentiki](https://github.com/glentiki) -
+**Glen Keane** <glenkeane.94@gmail.com> (he/him)
 * [imran-iq](https://github.com/imran-iq) -
 **Imran Iqbal** <imran@imraniqbal.org>
 * [imyller](https://github.com/imyller) -