Update js-beautify

This somewhat mitigates an issue where on very broken inputs (e.g
enormous JSON files full of unicode, pretending to be HTML) formatting
could effectively never complete. In this specific repro, the current
version is still going after many minutes but this version completes
after 16s (still terrible - but don't try to format large JSON as HTML
and we won't hit this problem, and we do format async anyway).

Author: pimterry