Update neomerx/cors-psr7 to v2

[internalsystemerror]

Version 2 is out https://github.com/neomerx/cors-psr7/tree/v2.0.2. I can see you're already ahead on this: neomerx/cors-psr7#32. Just wanted to give you the heads up.

[Rodrirokr]

As a side note on the neomerx/cors-psr7 update, I've detected a bug in the method
Analizer->getRequestedHeadersInLowerCase($request) it only gets the first of the methods of the request, so at the implementation of the method isRequestAllHeadersSupported of the AnalysisStrategyInterface interface in version v1.0.13 of neomerx/cors-psr7, only the first header of the request is checked against the headers.allow array of the CorsMiddleware configuration options. The version 2.x effectively corrects the issue with a forEach loop of all the request headers.