Update DB_URL

[donmhico]

Issue

It seems like the URL which contains the iso3166.csv was updated. https://dev.maxmind.com/csv-files/codes/iso3166.csv is returning "Redirecting to /static/csv/codes/iso3166.csv" which causes the composer install fail because the generated iso3166.php contains

array(1) {
  [0]=>
  array(1) {
    [0]=>
    string(44) "Redirecting to /static/csv/codes/iso3166.csv"
  }
}

instead of the expected iso3166 data.

See - https://dev.maxmind.com/geoip/legacy/codes?lang=en

Description

This PR updates DB_URL

[NeilJ247]

I raised this as an issue in #14. I am thinking we should set CURLOPT_FOLLOWLOCATION when downloading the file instead of changing the URL variable all the time.

    protected static function downloadFile($filename, $url)
    {
        $fileHandle = fopen($filename, 'w');
        $options    = [
            CURLOPT_FILE    => $fileHandle,
            CURLOPT_TIMEOUT => 600,
            CURLOPT_URL     => $url,
            CURLOPT_FOLLOWLOCATION => true,
        ];

        $curl = curl_init();
        curl_setopt_array($curl, $options);
        curl_exec($curl);
        curl_close($curl);
    }

[NeilJ247]

I've created another PR in #15 for my suggested change.

[donmhico]

I raised this as an issue in #14. I am thinking we should set CURLOPT_FOLLOWLOCATION when downloading the file instead of changing the URL variable all the time.

    protected static function downloadFile($filename, $url)
    {
        $fileHandle = fopen($filename, 'w');
        $options    = [
            CURLOPT_FILE    => $fileHandle,
            CURLOPT_TIMEOUT => 600,
            CURLOPT_URL     => $url,
            CURLOPT_FOLLOWLOCATION => true,
        ];

        $curl = curl_init();
        curl_setopt_array($curl, $options);
        curl_exec($curl);
        curl_close($curl);
    }

That approach should work as well. Just, personally, I tend not to use CURLOPT_FOLLOWLOCATION for fetching data just so that if the API URL was changed, just like this case, I can immediately know that it was change and see if other breaking changes happened.