Http/Cookie/CookieInterface.php getExpiration with wrong return type

[borisdelev]

In Http/Cookie/CookieInterface.php getExpiration method is with return type "string", but the framework return "interger"... so, lets put the right one.

In Phalcon 6 is set to int, in Phalcon 5.x is set to string, but return int.

Thank you :)