[Snyk] Upgrade ember-source from 3.19.0 to 3.28.0#11

snyk-bot wants to merge 1 commit intomasterhixio-mh/ember-cli-fastboot:masterfrom

snyk-upgrade-c9bfd3f699999ec08dba313da0cdfcfehixio-mh/ember-cli-fastboot:snyk-upgrade-c9bfd3f699999ec08dba313da0cdfcfeCopy head branch name to clipboard