PHP 8.2 utf8_encode deprecation

[parallels999]

https://php.watch/versions/8.2/utf8_encode-utf8_decode-deprecated

@ccampbell is this package already dead?

[djbritt]

Line 405 I changed to this, and it doesn't error out now.

return base64_encode(mb_convert_encoding(json_encode($data), 'UTF-8'));