Add support to php 8.1

[gnovaro]

Bug report

Title

Before install i get a few errors

Issue Description

Compatiblity issues with newer version

Preconditions

• Linux
• Latest version from main

Steps to reproduce

Just install in a 8.1 and run composer

Expected result

Success without any warnings

Actual result

PHP Fatal error: During inheritance of ArrayAccess: Uncaught ErrorException: Return type of Illuminate\Support\Collection::offsetExists($key) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Collections/Collection.php:1443 Stack trace: #0 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Collections/Collection.php(13): Illuminate\Foundation\Bootstrap\HandleExceptions->handleError() #1 /var/www/crm.roskus.com/vendor/composer/ClassLoader.php(571): include('...') #2 /var/www/crm.roskus.com/vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile() #3 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Collections/helpers.php(15): Composer\Autoload\ClassLoader->loadClass() #4 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Foundation/PackageManifest.php(130): collect() #5 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Foundation/PackageManifest.php(106): Illuminate\Foundation\PackageManifest->build() #6 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Foundation/PackageManifest.php(89): Illuminate\Foundation\PackageManifest->getManifest() #7 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Foundation/PackageManifest.php(78): Illuminate\Foundation\PackageManifest->config() #8 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/RegisterFacades.php(26): Illuminate\Foundation\PackageManifest->aliases() #9 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(237): Illuminate\Foundation\Bootstrap\RegisterFacades->bootstrap() #10 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(310): Illuminate\Foundation\Application->bootstrapWith() #11 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(127): Illuminate\Foundation\Console\Kernel->bootstrap() #12 /var/www/crm.roskus.com/artisan(37): Illuminate\Foundation\Console\Kernel->handle() #13 {main} in /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Collections/Collection.php on line 13 PHP Fatal error: Uncaught Error: Class "Illuminate\Support\Collection" not found in /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Collections/helpers.php:15 Stack trace: #0 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Support/Traits/ReflectsClosures.php(24): collect() #1 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Support/Traits/ReflectsClosures.php(44): Illuminate\Foundation\Exceptions\ReportableHandler->closureParameterTypes() #2 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Foundation/Exceptions/ReportableHandler.php(62): Illuminate\Foundation\Exceptions\ReportableHandler->firstClosureParameterType() #3 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Foundation/Exceptions/Handler.php(234): Illuminate\Foundation\Exceptions\ReportableHandler->handles() #4 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(88): Illuminate\Foundation\Exceptions\Handler->report() #5 /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(130): Illuminate\Foundation\Bootstrap\HandleExceptions->handleException() #6 [internal function]: Illuminate\Foundation\Bootstrap\HandleExceptions->handleShutdown() #7 {main} thrown in /var/www/crm.roskus.com/vendor/laravel/framework/src/Illuminate/Collections/helpers.php on line 15

Tell us what happens instead.
I get a compatibility issue i think or a missing dependency imported

[jitendra-webkul]

@Aqib-Webkul also upgrade to Laravel 9 too

[jitendra-webkul]

@gnovaro now supports PHP 8.1 and also upgraded to the Laravel 9