feat: upgrade phpunit to 12.5

tests/Model/ContingentQueryTest.php

@@ -6,6 +6,7 @@ namespace App\Tests\Model;
 
 use App\Model\ContingentCalendarQuery;
 use App\Model\ContingentPricesQuery;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Validator\Validation;
 
@@ -30,15 +31,13 @@ class ContingentQueryTest extends TestCase
         self::assertNull($query->dateToDate());
     }
 
-    /**
-     * @dataProvider invalidCalendarQueries
-     */
+    #[DataProvider('invalidCalendarQueries')]
     public function testCalendarQueryRejectsInvalidInput(ContingentCalendarQuery $query): void
     {
         self::assertGreaterThan(0, $this->validator()->validate($query)->count());
     }
 
-    public function invalidCalendarQueries(): iterable
+    public static function invalidCalendarQueries(): iterable
     {
         yield 'normalized invalid date' => [new ContingentCalendarQuery('HOTEL', '2026-02-31', '2026-03-01')];
         yield 'reversed range' => [new ContingentCalendarQuery('HOTEL', '2026-03-02', '2026-03-01')];