Update versions

[Jubeki]

Update the illumiante/collections requirements to the supported PHP versions, see the following table:

Laravel/Illuminate	composer.json	Docs	EOL in Docs
v11	^8.2	8.2 - 8.4	12th March 2026
v10	^8.1	8.1 - 8.3	4th Feb 2025
v9	^8.0.2	8.0 - 8.2	6th Feb 2024
v8	^7.3 or ^8.0	7.3 - 8.1	24th Jan 2023
v7	-	7.2 - 8.0	3rd Mar 2021

Furthermore I think illuminate/collections doesn't exist before v8: see https://packagist.org/packages/illuminate/collections
So I am not even sure, what would be installed here.

Guzzle ^7.0.1 is required as of laravel/illuminate 8.
phpunit ^9.5 is required as of laravel/illuminate 8.
See https://github.com/laravel/laravel/blob/8.x/composer.json

PHPstan 2 can be used as of PHP 7.4.
See https://github.com/phpstan/phpstan/blob/2.0.x/composer.json

ext-json is always included as of PHP 8.0 and was therefor removed as a requirement.
See https://php.watch/versions/8.0/ext-json

Another note:
I needed to add /* @phpstan-ignore class.extendsFinalByPhpDoc */ to the GuzzleClient, because it extends the class client which has a phpdoc with @final meaning it should not be extended from. In my opinion should this be refactored in another PR.