[ticket/14948] Adjust calls for twig and phpunit updates

PHPBB3-14948

tests/auth/provider_apache_test.php

@@ -17,7 +17,7 @@ class phpbb_auth_provider_apache_test extends phpbb_database_test_case
 	protected $user;
 	protected $request;
 
-	protected function setup()
+	protected function setup(): void
 	{
 		parent::setUp();