tests: fixed array() return

tests/Unit/Middleware/CallableHandlerTest.php

@@ -136,6 +136,6 @@ class CallableHandlerTest extends TestCase
         $callable = $this->getMockBuilder(stdClass::class)
             ->setMethods(['__invoke'])
             ->getMock();
-        return array($request, $response, $callable, $handler);
+        return [$request, $response, $callable, $handler];
     }
 }

tests/Unit/Middleware/RouteDispatcherTest.php

@@ -143,6 +143,6 @@ class RouteDispatcherTest extends TestCase
             ->method('getPath')
             ->willReturn('/foo%21bar');
 
-        return array($dispatcher, $response, $request, $handler);
+        return [$dispatcher, $response, $request, $handler];
     }
 }