Fix Slim\Psr7\Request instantiation

[chunfeilung]

This is how SlimRequest (Slim\Psr7\Request) is currently instantiated:

new SlimRequest($method, $uri, $h, $serverParams, $cookies, $stream)

And this is what Slim\Psr7\Request actually expects:

public function __construct(
        $method,
        UriInterface $uri,
        HeadersInterface $headers,
        array $cookies,      👈
        array $serverParams, 👈
        StreamInterface $body,
        array $uploadedFiles = []
    )

The proposed change swaps the order in which $cookies and $serverParams are passed to Request, so that it’s instantiated correctly.