Windows detection is broken

[c33s]

in

grav/system/src/Grav/Console/ConsoleTrait.php

Line 120 in 7710cba

public function isWindows()

array_key_exists vs in_array

the code should be

    /**
     * Validate if the system is based on windows or not.
     *
     * @return bool
     */
    public function isWindows()
    {
        $keys = [
            'CYGWIN_NT-5.1',
            'WIN32',
            'WINNT',
            'Windows'
        ];
        return in_array(PHP_OS, $keys);
    }

another option would be:

protected function isWin()
{
    if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
        return true;
    }

    return false;
}

or with DIRECTORY_SEPERATOR which is \ on windows