maintainers: Add kyberdin as collaborator on nRF Ironside SE

Add kyberdin to nRF Ironside SE platform.

Signed-off-by: Stephen Stauts <stephen.stauts@nordicsemi.no>

Author: kyberdin

MAINTAINERS.yml

@@ -6643,6 +6643,7 @@ nRF IronSide SE Platforms:
     - jonathannilsen
     - karstenkoenig
     - SebastianBoe
+    - kyberdin
   files:
     - modules/hal_nordic/ironside/
     - soc/nordic/common/uicr/