MAINTAINERS: Add rugeGerritsen to BT host as collaborator

Add Rubin Gerritsen as collaborator to the BT host.
He has been very active in this area.
See for more info:
zephyrproject-rtos#80233

Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>

MAINTAINERS.yml

@@ -360,6 +360,7 @@ Bluetooth Host:
   collaborators:
     - hermabe
     - Thalley
+    - rugeGerritsen
     - sjanc
     - theob-pro
   files: