meta: consolidate AUTHORS entries for robin-drexler

PR-URL: #39705
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

.mailmap

@@ -330,6 +330,7 @@ rickyes <0x19951125@gmail.com> <mail@zhoumq.cn>
 Rob Adelmann <adelmann@adobe.com>
 Rob Adelmann <adelmann@adobe.com> <robadelmann@gmail.com>
 Robert Nagy <ronagy@icloud.com> <robertnagy@Roberts-MacBook-Pro.local>
+Robin Drexler <drexler.robin@gmail.com> <robin.drexler@xing.com>
 Rod Machen <rod.machen@help.com> <mail@rodmachen.com>
 Roman Klauke <romaaan.git@gmail.com> <romankl@users.noreply.github.com>
 Roman Reiss <me@silverwind.io>

AUTHORS

@@ -2503,7 +2503,7 @@ Morgan Roderick <morgan@roderick.dk>
 Remy Parzinski <rs.parzinski@gmail.com>
 Roland Broekema <roland.broekema@qnh.nl>
 Florin-Daniel BÎLBÎE <fbilbie@bitdefender.com>
-Robin Drexler <robin.drexler@xing.com>
+Robin Drexler <drexler.robin@gmail.com>
 ZauberNerd <zaubernerd@zaubernerd.de>
 G. Carcaci <giuseppecarcaci@gmail.com>
 Jackson Chui <14085209+haiXchuus@users.noreply.github.com>
@@ -2580,7 +2580,6 @@ rahulshuklab4u <rahulshuklab4u@gmail.com>
 gengjiawen <technicalcute@gmail.com>
 Maya Anilson <manilson@yahoo.in>
 Mrityunjoy Saha <msaha@vmware.com>
-Robin Drexler <drexler.robin@gmail.com>
 Prabu Subra <prabus69@gmail.com>
 Abhishek Dixit <abhishek.dixit@genisys-group.com>
 Sarath Govind K K <sarathgovind27@gmail.com>