[Snyk] Security upgrade express from 4.16.4 to 4.21.1#22

codingChewie wants to merge 1 commit intomasterprogrammingmonkeys/node-unit-testing-in-depth:masterfrom

snyk-fix-808cc188d20937f3bda359e058f7cc48programmingmonkeys/node-unit-testing-in-depth:snyk-fix-808cc188d20937f3bda359e058f7cc48Copy head branch name to clipboard