Updated DateTime types.

src/Request/SearchPricesForCategoryRequest.php

@@ -2,7 +2,7 @@
 
 namespace App\Request;
 
-use DateTimeInterface;
+use DateTimeImmutable;
 use OpenApi\Attributes as OA;
 use Symfony\Component\Validator\Constraints as Assert;
 
@@ -14,9 +14,9 @@ class SearchPricesForCategoryRequest
 
     #[OA\Property(description: 'Period start date')]
     #[Assert\NotBlank]
-    public DateTimeInterface $startDate;
+    public DateTimeImmutable $startDate;
 
     #[OA\Property(description: 'Period end date')]
     #[Assert\NotBlank]
-    public DateTimeInterface $endDate;
+    public DateTimeImmutable $endDate;
 }