title: Laravel mimes validation rule not working for some file extensions
body: <p>I'm trying to use <code>mimes</code> validation rule to validate uploading file.</p>
  
  <pre><code>'attachment' =&gt; 'required|file|max:1024|mimes:png,gif,jpg,txt,pdf,doc,docx,zip,rar'  
  </code></pre>
  
  <p>It's working for some files with extensions like <code>php</code> but It's not working for extensions like <code>js apk ovpn ....</code>  </p>
  
  <p>Any idea?</p>