Fixed use of ImplicitOptionsMiddleware with its new signature

module/Rest/test/Middleware/EmptyResponseImplicitOptionsMiddlewareFactoryTest.php

@@ -7,6 +7,7 @@ namespace ShlinkioTest\Shlink\Rest\Middleware;
 use Laminas\Diactoros\Response\EmptyResponse;
 use Mezzio\Router\Middleware\ImplicitOptionsMiddleware;
 use PHPUnit\Framework\TestCase;
+use Psr\Http\Message\ResponseFactoryInterface;
 use ReflectionObject;
 use Shlinkio\Shlink\Rest\Middleware\EmptyResponseImplicitOptionsMiddlewareFactory;
 
@@ -34,6 +35,10 @@ class EmptyResponseImplicitOptionsMiddlewareFactoryTest extends TestCase
         $ref = new ReflectionObject($instance);
         $prop = $ref->getProperty('responseFactory');
         $prop->setAccessible(true);
-        self::assertInstanceOf(EmptyResponse::class, $prop->getValue($instance)());
+
+        /** @var ResponseFactoryInterface $value */
+        $value = $prop->getValue($instance);
+
+        self::assertInstanceOf(EmptyResponse::class, $value->createResponse());
     }
 }