fix: Fix return types in tests.

src/Bundle/ChillPersonBundle/Tests/Controller/PersonControllerUpdateWithHiddenFieldsTest.php

@@ -50,7 +50,7 @@ final class PersonControllerUpdateWithHiddenFieldsTest extends WebTestCase
     /**
      * Prepare client and create a random person.
      */
-    public function setUp(): void
+    protected function setUp(): void
     {
         self::bootKernel(['environment' => 'test_with_hidden_fields']);
 
@@ -83,7 +83,7 @@ final class PersonControllerUpdateWithHiddenFieldsTest extends WebTestCase
         );
     }
 
-    public function tearDown()
+    protected function tearDown(): void
     {
         $this->refreshPerson();
         $this->em->remove($this->person);