[Snyk] Upgrade handlebars from 4.5.1 to 4.7.3#2

snyk-bot wants to merge 1 commit intomasteradamlaska/nodejs.org:masterfrom

snyk-upgrade-d4036c3f6fcd8c56f241c0cfce8ceb3cadamlaska/nodejs.org:snyk-upgrade-d4036c3f6fcd8c56f241c0cfce8ceb3cCopy head branch name to clipboard