Fix legacy cookie defaults deprecations

[artursvonda]

Fixes deprecation from latest Symfony version

The default value of the "$secure" and "$samesite" arguments of "Symfony\Component\HttpFoundation\Cookie::__construct"'s constructor will respectively change from "false" to "null" and from "null" to "lax" in Symfony 5.0, you should define their values explicitly or use "Cookie::create()" instead.

Supports both current (constructor) version and suggested Cookie::create factory.

Since supported PHP version is 5.3.x+, couldn't use Cookie::class constant so instead used string of class name.

[artursvonda]

No idea why composer check failed in Scrutinizer since I didn't change anything.

[stof]

Thanks @artursvonda