test-spec: update CI-secdom-test

Adds the ironside se update script to the secdom test spec

Signed-off-by: Eirik Ekrheim Bjørklund <eirik.bjoerklund@nordicsemi.no>

Author: eirikekbjoe

.github/test-spec.yml

@@ -646,3 +646,4 @@
   - "include/nfc/ndef/text_rec.h"
   - "include/dk_buttons_and_leds.h"
   - "include/app_event_manager/app_event_manager.h"
+  - "scripts/west_commands/ncs_ironside_se_update.py"