Suppress warnings and deprecation notices in PHP 8.3

[psyche]

Hello!

We have recently upgraded our systems to PHP 8.3 and are getting an extreme amount of warnings and deprecation notices on `stderr`.

We tried starting the crawler with `-d error_reporting='E_ALL & ~E_WARNING & ~E_USER_WARNING & ~E_DEPRECATED & ~E_USER_DEPRECATED'`, but the error level seems to be hardcoded in `pages/class.grab.inc.php`.

1. Are there plans to upgrade the crawler to be compatible with PHP 8.3?
2. If not, could you add a setting to disable warnings and deprecation notices?

Thank you in advance.