Add return type hint to getTargets method

The getTargets method now explicitly returns an array, enhancing type safety and readability. This change ensures that the return type is clear to any developers interacting with this method.

src/Bundle/ChillMainBundle/Workflow/Validator/EntityWorkflowCreation.php

@@ -27,7 +27,7 @@ class EntityWorkflowCreation extends \Symfony\Component\Validator\Constraint
 
     public string $messageWorkflowNotAvailable = 'Workflow is not valid';
 
-    public function getTargets()
+    public function getTargets(): array
     {
         return [self::CLASS_CONSTRAINT];
     }