[Snyk] Security upgrade express from 4.16.2 to 4.21.0#50

strues wants to merge 1 commit intomasterstrues/react-universal-boiler:masterfrom

snyk-fix-5d4229437b47d7abf2eb66dc87245e04strues/react-universal-boiler:snyk-fix-5d4229437b47d7abf2eb66dc87245e04Copy head branch name to clipboard