[Snyk] Upgrade systemjs from 0.19.39 to 0.21.6#2

snyk-bot wants to merge 1 commit intomasterUpperLEFTY/task-for-development:masterfrom

snyk-upgrade-4aba6d3e173f6fd592b615cf0cf2d467UpperLEFTY/task-for-development:snyk-upgrade-4aba6d3e173f6fd592b615cf0cf2d467Copy head branch name to clipboard