[Snyk] Security upgrade express from 4.16.4 to 4.20.0#21

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

snyk-fix-a19b87dea7c0b3b9fa5d76e635e92236programmingmonkeys/node-unit-testing-in-depth:snyk-fix-a19b87dea7c0b3b9fa5d76e635e92236Copy head branch name to clipboard