Apply fixes from StyleCI

Author: samdark

tests/Middleware/ErrorCatcherTest.php

@@ -170,7 +170,7 @@ private function createServerRequest(string $method, array $headers = []): Serve
 
     private function createRequestHandlerWithThrowable(): RequestHandlerInterface
     {
-        return new class() implements RequestHandlerInterface {
+        return new class () implements RequestHandlerInterface {
             public function handle(ServerRequestInterface $request): ResponseInterface
             {
                 throw new RuntimeException();

tests/Middleware/ExceptionResponderTest.php

@@ -55,7 +55,7 @@ private function process(ExceptionResponder $middleware): ResponseInterface
     {
         return $middleware->process(
             (new ServerRequestFactory())->createServerRequest(Method::GET, 'http://example.com'),
-            new class() implements RequestHandlerInterface {
+            new class () implements RequestHandlerInterface {
                 public function handle(ServerRequestInterface $request): ResponseInterface
                 {
                     throw new DomainException();