️ Issue #3288850 by dpi: Drupal 10 compatibility

src/Event/OhEvent.php

@@ -6,7 +6,7 @@ namespace Drupal\oh\Event;
 
 use Drupal\Core\Entity\EntityInterface;
 use Drupal\oh\OhDateRange;
-use Symfony\Component\EventDispatcher\Event;
+use Symfony\Contracts\EventDispatcher\Event;
 
 /**
  * Used to add events between a date range.