[Snyk] Security upgrade express from 4.13.4 to 4.21.1#55

john-bauer wants to merge 1 commit intomasterjohn-bauer/socket.io:masterfrom

snyk-fix-5ba5a2bc55248398761284ee5a1e7db4john-bauer/socket.io:snyk-fix-5ba5a2bc55248398761284ee5a1e7db4Copy head branch name to clipboard