title: Verion 9 of Highlight.js has reached EOL. It will no longer be supported
body: <p>err:
  Verion 9 of Highlight.js has reached EOL.  It will no longer
  be supported or receive security updates in the future.
  Please upgrade to version 10 or encourage your indirect
  dependencies to do so.</p>
  <p>How do I change the version? And what is Highlight.js for?
  thank you for the answers.</p>