title: How can I have the date in french locale
body: <p>I use this function to have a date in a document </p>
  
  <pre><code>Utilities.formatDate(datejdc, "CEST","EEEE, dd MMMMM yy");
  </code></pre>
  
  <p>I would like to have the date in French</p>
  
  <p>How can I change the locale in google apps script ?</p>