Add support for laravel 11, and add then use the latest php 8.3 version

[lloricode]

additional changes of #49

[lloricode]

⚗️ Using this package? If you would like to help test these changes or believe them to be compatible, you may update your project to reference this branch.

To do so, temporarily add my fork to the repositories property of your composer.json:

{
    "repositories": [
        {
            "type": "vcs",
            "url": "https://github.com/lloricode/json-api.git"
        }
    ]
}

Then update your dependency constraint to reference this branch:

{
    "require": {
        "timacdonald/json-api": "dev-l11-compatibility",
    }
}

Finally, run: composer update

[jbrooksuk]

@timacdonald 🙏

[lloricode]

close as continue at #49

[timacdonald]

I had to make a few extra tweaks and didn't see this one. Appreciate you sending it through.