api(application): fix requests

app/Http/Requests/Api/Application/Nodes/UpdateNodeRequest.php

@@ -6,14 +6,8 @@ use Pterodactyl\Models\Node;
 
 class UpdateNodeRequest extends StoreNodeRequest
 {
-    /**
-     * Apply validation rules to this request. Uses the parent class rules()
-     * function but passes in the rules for updating rather than creating.
-     */
     public function rules(array $rules = null): array
     {
-        $nodeId = $this->getModel(Node::class)->id;
-
-        return parent::rules(Node::getRulesForUpdate($nodeId));
+        return parent::rules($rules ?? Node::getRulesForUpdate($this->route()->parameter('node')->id));
     }
 }