Please resolve security alerts and bump Highlight.js dependency

[Josh Goebel]

@WinOpsDBA @qubyte

If neither of you have time to maintain this anymore then we'll need mark it archived and I'll add a notice to the README that it's currently unmaintained and in need of a maintainer.

Please let me know.

Thanks,

[Mark S. Everitt]

Hi @joshgoebel. My circumstances have changed somewhat. If nobody objects then I think it's time to archive.

[Josh Goebel]

Thanks for getting back to me! I've updated the README for now.