chore: cleanup, update project dependencies

src/Controller/Api/NewsletterSubscriptionController.php

@@ -96,6 +96,9 @@ class NewsletterSubscriptionController extends AbstractController
         ], $extra), Response::HTTP_BAD_REQUEST);
     }
 
+    /**
+     * @return array<string, mixed>
+     */
     private function responsePayload(NewsletterSubscriptionRequestResult $result): array
     {
         return [

src/Controller/Booking/Create/Step4Controller.php

@@ -109,7 +109,7 @@ class Step4Controller extends AbstractBookingCreateController
                     && $form->has('newsletterOptIn')
                     && true === $form->get('newsletterOptIn')->getData();
 
-                if (true === $newsletterOptInSelected && null !== $newsletterTargetEmail) {
+                if (true === $newsletterOptInSelected) {
                     try {
                         $targetParticipant = $this->resolveNewsletterTargetParticipant($bookingCreateDto);
                         $this->doubleOptInService->requestDefaultListSubscription(