cs: Switch to a stricter way of coding - this might break in a lot of places.

src/Bundle/ChillMainBundle/Tests/Security/Resolver/CenterResolverDispatcherTest.php

@@ -20,7 +20,7 @@ use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
  * @internal
  * @coversNothing
  */
-class CenterResolverDispatcherTest extends KernelTestCase
+final class CenterResolverDispatcherTest extends KernelTestCase
 {
     private CenterResolverDispatcherInterface $dispatcher;