Add phpstan level 7(#544)

database/factories/ServerProviderFactory.php

@@ -6,6 +6,9 @@
 use App\Models\User;
 use Illuminate\Database\Eloquent\Factories\Factory;
 
+/**
+ * @extends Factory<\App\Models\ServerProvider>
+ */
 class ServerProviderFactory extends Factory
 {
     protected $model = ServerProvider::class;