Applied rector to remaining test files

tests/Controller/ScanControllerTest.php

@@ -1,4 +1,7 @@
 <?php
+
+declare(strict_types=1);
+
 /*
  * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
  *
@@ -17,7 +20,6 @@
  *  You should have received a copy of the GNU Affero General Public License
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
-
 namespace App\Tests\Controller;
 
 use Symfony\Bundle\FrameworkBundle\KernelBrowser;
@@ -49,4 +51,4 @@ class ScanControllerTest extends WebTestCase
         $this->client->request('GET', '/scan/part/1');
         $this->assertResponseRedirects('/en/part/1');
     }
-}
+}