Deprecation warning with PHP 8.4

[acelaya]

I have identified this deprecation warning thrown when using with PHP 8.4 RKA\Middleware\IpAddress::__construct(): Implicitly marking parameter $trustedProxies as nullable is deprecated, the explicit nullable type must be used instead.

This is the RFC where this was proposed https://wiki.php.net/rfc/deprecate-implicitly-nullable-types

The solution implies implicitly marking parameters as nullable when they have null as default value.

I'm happy to provide a PR addressing these warnings and adding PHP 8.4 to the pipeline.

[akrabat]

Thanks for the report and fix. Not sure why you deleted your PR so quickly, but I remade and released 2.4.0.

[acelaya]

Not sure why you deleted your PR so quickly

Oh! Sorry, that was unintentional. I think I deleted the source branch from my fork by mistake.

Thanks for the release!