[Snyk] Upgrade node-sass from 4.8.3 to 4.13.1#1

snyk-bot wants to merge 1 commit intomerchello-devraindigi/Merchello:merchello-devfrom

snyk-upgrade-4dd2b196af309e28804bfb224d36ee22raindigi/Merchello:snyk-upgrade-4dd2b196af309e28804bfb224d36ee22Copy head branch name to clipboard