[Snyk] Upgrade gulp-minify-css from 0.3.13 to 0.5.1#2

snyk-bot wants to merge 1 commit intomasterdonkeycode/ionic-init:masterfrom

snyk-upgrade-8b6d833a3f9d4b5ca21111c2a945cd44donkeycode/ionic-init:snyk-upgrade-8b6d833a3f9d4b5ca21111c2a945cd44Copy head branch name to clipboard