fix: add missing body to task not found exception

src/Exceptions/TaskNotFoundException.php

@@ -4,5 +4,8 @@ namespace Exceptions;
 
 class TaskNotFoundException extends \Exception
 {
-
+    public function __construct(string $message = "Task not found.", int $code = 0, \Throwable $previous = null)
+    {
+        parent::__construct($message, $code, $previous);
+    }
 }