zephyr: Update maintainers list

This commit should deal with updating the maintainers list for Smartbond
family of devices.

Signed-off-by: Ioannis Karachalios <[email protected]>

Author: ioannis-karachalios

MAINTAINERS.yml

@@ -4280,10 +4280,9 @@ Renesas SmartBond Platforms:
   status: maintained
   maintainers:
     - ioannis-karachalios
-    - andrzej-kaczmarek
-    - blauret
-  collaborators:
     - ydamigos
+  collaborators:
+    - blauret
   files:
     - boards/renesas/da14*/
     - drivers/*/*smartbond*