[Tests] Fix data-provider with recent versions of PHPUnit

Author: Kocal

tests/fixtures/make-form/tests/it_generates_form_with_many_to_many_relation.php

@@ -12,15 +12,16 @@
 use Doctrine\ORM\Query;
 use Doctrine\ORM\QueryBuilder;
 use Doctrine\Persistence\ManagerRegistry;
+use PHPUnit\Framework\Attributes\DataProvider;
 use Symfony\Bridge\Doctrine\Form\DoctrineOrmExtension;
-use Symfony\Component\Form\PreloadedExtension;
 use Symfony\Component\Form\Test\TypeTestCase;
 
 class GeneratedFormTest extends TypeTestCase
 {
     /**
      * @dataProvider provideFormData
      */
+    #[DataProvider('provideFormData')]
     public function testGeneratedFormWithMultipleChoices($formData, $collection)
     {
         $form = $this->factory->create(BookType::class);
@@ -40,7 +41,7 @@ public function testGeneratedFormWithMultipleChoices($formData, $collection)
         }
     }
 
-    public function provideFormData(): iterable
+    public static function provideFormData(): iterable
     {
         yield 'test_submit_with_single_choice_selected' =>
         [
@@ -52,7 +53,8 @@ public function provideFormData(): iterable
                 (new Library())->setName('bar'),
             ]),
         ];
-        yield ['test_submit_with_multiple_choices_selected' =>
+        yield 'test_submit_with_multiple_choices_selected' =>
+        [
             [
                 'title' => 'foobar',
                 'libraries' => [0, 1],
@@ -62,7 +64,8 @@ public function provideFormData(): iterable
                 (new Library())->setName('bar'),
             ]),
         ];
-        yield ['test_submit_with_no_choice_selected' =>
+        yield 'test_submit_with_no_choice_selected' =>
+        [
             [
                 'title' => 'foobar',
                 'libraries' => [],