Describe the bug
PHP 8.1 supports enums, Laravel 9 support enum cast but the package don't support it

Eloquent Query
Please provide the complete eloquent query that caused the bug, for example:

Game::query()->create([
 'type' => GameType::LOTTO325
])

Stack Trace
[2022年03月17日 15:25:27] local.ERROR: GeneaLabs\LaravelModelCaching\CacheKey::getValuesFromWhere(): Return value must be of type string, App\Enums\GameType returned {"exception":"[object] (TypeError(code: 0): GeneaLabs\LaravelModelCaching\CacheKey::getValuesFromWhere(): Return value must be of type string, App\Enums\GameType returned at /var/www/html/vendor/genealabs/laravel-model-caching/src/CacheKey.php:290)
[stacktrace]
#0 /var/www/html/vendor/genealabs/laravel-model-caching/src/CacheKey.php(267): GeneaLabs\LaravelModelCaching\CacheKey->getValuesFromWhere()
#1 /var/www/html/vendor/genealabs/laravel-model-caching/src/CacheKey.php(192): GeneaLabs\LaravelModelCaching\CacheKey->getValuesClause()
#2 /var/www/html/vendor/genealabs/laravel-model-caching/src/CacheKey.php(326): GeneaLabs\LaravelModelCaching\CacheKey->getOtherClauses()
#3 /var/www/html/vendor/laravel/framework/src/Illuminate/Collections/Traits/EnumeratesValues.php(757): GeneaLabs\LaravelModelCaching\CacheKey->GeneaLabs\LaravelModelCaching\{closure}()
#4 /var/www/html/vendor/genealabs/laravel-model-caching/src/CacheKey.php(329): Illuminate\Support\Collection->reduce()
#5 /var/www/html/vendor/genealabs/laravel-model-caching/src/CacheKey.php(48): GeneaLabs\LaravelModelCaching\CacheKey->getWhereClauses()
#6 /var/www/html/vendor/genealabs/laravel-model-caching/src/Traits/Caching.php(182): GeneaLabs\LaravelModelCaching\CacheKey->make()
#7 /var/www/html/vendor/genealabs/laravel-model-caching/src/Traits/Buildable.php(86): GeneaLabs\LaravelModelCaching\CachedBuilder->makeCacheKey()
#8 /var/www/html/database/seeders/LottoSeeder.php(39): GeneaLabs\LaravelModelCaching\CachedBuilder->first()
#9 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(36): Database\Seeders\LottoSeeder->run()
#10 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/Util.php(41): Illuminate\Container\BoundMethod::Illuminate\Container\{closure}()
#11 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(93): Illuminate\Container\Util::unwrapIfClosure()
#12 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(37): Illuminate\Container\BoundMethod::callBoundMethod()
#13 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/Container.php(653): Illuminate\Container\BoundMethod::call()
#14 /var/www/html/vendor/laravel/framework/src/Illuminate/Database/Seeder.php(175): Illuminate\Container\Container->call()
#15 /var/www/html/vendor/laravel/framework/src/Illuminate/Database/Seeder.php(184): Illuminate\Database\Seeder->Illuminate\Database\{closure}()
#16 /var/www/html/vendor/laravel/framework/src/Illuminate/Database/Console/Seeds/SeedCommand.php(75): Illuminate\Database\Seeder->__invoke()
#17 /var/www/html/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Concerns/GuardsAttributes.php(155): Illuminate\Database\Console\Seeds\SeedCommand->Illuminate\Database\Console\Seeds\{closure}()
#18 /var/www/html/vendor/laravel/framework/src/Illuminate/Database/Console/Seeds/SeedCommand.php(76): Illuminate\Database\Eloquent\Model::unguarded()
#19 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(36): Illuminate\Database\Console\Seeds\SeedCommand->handle()
#20 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/Util.php(41): Illuminate\Container\BoundMethod::Illuminate\Container\{closure}()
#21 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(93): Illuminate\Container\Util::unwrapIfClosure()
#22 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(37): Illuminate\Container\BoundMethod::callBoundMethod()
#23 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/Container.php(653): Illuminate\Container\BoundMethod::call()
#24 /var/www/html/vendor/laravel/framework/src/Illuminate/Console/Command.php(136): Illuminate\Container\Container->call()
#25 /var/www/html/vendor/symfony/console/Command/Command.php(291): Illuminate\Console\Command->execute()
#26 /var/www/html/vendor/laravel/framework/src/Illuminate/Console/Command.php(121): Symfony\Component\Console\Command\Command->run()
#27 /var/www/html/vendor/symfony/console/Application.php(989): Illuminate\Console\Command->run()
#28 /var/www/html/vendor/symfony/console/Application.php(299): Symfony\Component\Console\Application->doRunCommand()
#29 /var/www/html/vendor/symfony/console/Application.php(171): Symfony\Component\Console\Application->doRun()
#30 /var/www/html/vendor/laravel/framework/src/Illuminate/Console/Application.php(102): Symfony\Component\Console\Application->run()
#31 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(129): Illuminate\Console\Application->run()
#32 /var/www/html/artisan(37): Illuminate\Foundation\Console\Kernel->handle()
#33 {main}

Environment

• PHP: 8.1.3
• OS: Ubuntu 21.4
• Laravel: 9.4.1
• Model Caching: 0.12.2