meta: move AnnaMag to Collaborator Emeriti list

AnnaMag hasn't authored/landed/reviewed code in quite some time. I sent
them an email asking about becoming Emeritus but did not get a response.
It's easy enough to re-onboard someone back to active status if they
become active again, so I think this is a pretty safe change to make.
I'll specifically request a review of this change from them so they get
notified and can comment/review/block/approve/etc. this.

PR-URL: #27603
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

README.md

@@ -247,8 +247,6 @@ For information about the governance of the Node.js project, see
 **Aleksei Koziatinskii** <ak239spb@gmail.com>
 * [AndreasMadsen](https://github.com/AndreasMadsen) -
 **Andreas Madsen** <amwebdk@gmail.com> (he/him)
-* [AnnaMag](https://github.com/AnnaMag) -
-**Anna M. Kedzierska** <anna.m.kedzierska@gmail.com>
 * [antsmartian](https://github.com/antsmartian) -
 **Anto Aravinth** <anto.aravinth.cse@gmail.com> (he/him)
 * [apapirovski](https://github.com/apapirovski) -
@@ -486,6 +484,8 @@ For information about the governance of the Node.js project, see
 
 * [andrasq](https://github.com/andrasq) -
 **Andras** <andras@kinvey.com>
+* [AnnaMag](https://github.com/AnnaMag) -
+**Anna M. Kedzierska** <anna.m.kedzierska@gmail.com>
 * [imran-iq](https://github.com/imran-iq) -
 **Imran Iqbal** <imran@imraniqbal.org>
 * [isaacs](https://github.com/isaacs) -