maintainers: Update the hal_nordic entry

Add myself as a maintainer as well as Robert as a collaborator.

Signed-off-by: Carles Cufi <[email protected]>

Author: carlescufi

MAINTAINERS.yml

@@ -5399,6 +5399,7 @@ West:
     - anangl
     - nika-nordic
     - masz-nordic
+    - carlescufi
   collaborators:
     - nordic-krch
     - kl-cruz
@@ -5407,6 +5408,7 @@ West:
     - mif1-nordic
     - adamkondraciuk
     - lstnl
+    - rlubos
   files:
     - modules/hal_nordic/
   labels: