[Snyk] Security upgrade gulp-sass from 2.3.2 to 5.0.0#21

snyk-bot wants to merge 1 commit intomasterE-LLP/developer.github.com:masterfrom

snyk-fix-ba1e202a0a8a99a420db7e3e9bbae6beE-LLP/developer.github.com:snyk-fix-ba1e202a0a8a99a420db7e3e9bbae6beCopy head branch name to clipboard