title: word start with uppercase (unicode) in laravel validation
body: <p>I need check that word start from Uppercase (for name of user) and it should work in not only English language (first of all, in Russian).</p>
  
  <p>Now I have next code:</p>
  
  <pre><code>$data_user  = $this-&gt;validate($request, [
      'name'=&gt;'required|regex:/^[\p{Lu}][\p{Ll}]*$/',
  ]);
  </code></pre>
  
  <p>It's work as I want in this <a href="http://www.rubular.com/" rel="nofollow noreferrer">service</a> but it doesn't work in Laravel validation. How fix my code or we can't do it in laravel validation?</p>