ci: test debusine extra repositories branch

Point DEBUSINE_ACTION_REF to dev/sbeaudoi-extra-repositories.

This enables pkg-example trixie validation for extra-repositories.

Signed-off-by: Simon Beaudoin <sbeaudoi@qti.qualcomm.com>

Author: simonbeaudoin0935

.github/workflows/pkg-build-reusable-workflow.yml

@@ -96,7 +96,7 @@ permissions:
   packages: read
 
 env:
-  DEBUSINE_ACTION_REF: main
+  DEBUSINE_ACTION_REF: dev/sbeaudoi-extra-repositories
 
 jobs:
   resolve: