Automated Project Update Bot fixes

Relates to #3499039. This merge request was automatically created by the Project Update Bot. It contains the changes from run 11-392907.

modules/confirmation_example/src/ExampleConfirmationEventSubscriber.php

@@ -9,7 +9,7 @@ use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
 final class ExampleConfirmationEventSubscriber implements EventSubscriberInterface {
 
-  public static function getSubscribedEvents() {
+  public static function getSubscribedEvents(): array {
     return [
       ConfirmationEvent::getEventName(ExampleConfirmationBundle::BUNDLE) => 'onStateSettled',
     ];