Remove PHPStan level 6 errors from DynamicSegments

Remove the following errors:
(Method|Property|Function) has no (return )?type specified.
(Method|Function) has parameter with no type (specified).

[MAILPOET-3720]

mailpoet/lib/Segments/DynamicSegments/DynamicSegmentsListingRepository.php

@@ -7,7 +7,7 @@ use MailPoet\Segments\SegmentListingRepository;
 use MailPoetVendor\Doctrine\ORM\QueryBuilder;
 
 class DynamicSegmentsListingRepository extends SegmentListingRepository {
-  protected function applyParameters(QueryBuilder $queryBuilder, array $parameters) {
+  protected function applyParameters(QueryBuilder $queryBuilder, array $parameters): void {
     $queryBuilder
       ->andWhere('s.type = :type')
       ->setParameter('type', SegmentEntity::TYPE_DYNAMIC);