Automated Project Update Bot fixes

This merge request was automatically created by the Project Update Bot. It contains the changes from run 11-121090.

src/Config/SchemaConfigSubscriber.php

@@ -48,7 +48,7 @@ class SchemaConfigSubscriber implements EventSubscriberInterface {
   /**
    * {@inheritdoc}
    */
-  public static function getSubscribedEvents() {
+  public static function getSubscribedEvents(): array {
     return [ConfigEvents::SAVE => 'onConfigSave'];
   }