apply rector rules: php up to php82

src/Bundle/ChillCalendarBundle/Export/Aggregator/LocationAggregator.php

@@ -19,7 +19,7 @@ use Doctrine\ORM\QueryBuilder;
 use Symfony\Component\Form\FormBuilderInterface;
 use function in_array;
 
-final class LocationAggregator implements AggregatorInterface
+final readonly class LocationAggregator implements AggregatorInterface
 {
     public function __construct(private LocationRepository $locationRepository)
     {