[Snyk] Upgrade underscore from 1.13.3 to 1.13.6#6

snyk-bot wants to merge 1 commit intomasterchequer-io/jsonpath:masterfrom

snyk-upgrade-8db76e793d57cc81d79a46a134dd2cdcchequer-io/jsonpath:snyk-upgrade-8db76e793d57cc81d79a46a134dd2cdcCopy head branch name to clipboard