[Snyk] Security upgrade express from 4.16.4 to 4.21.2#15

eistrati wants to merge 1 commit intomasterMitocGroup/mitocgroup.github.io:masterfrom

snyk-fix-f5021cd14107da9a44c9114d20b7014fMitocGroup/mitocgroup.github.io:snyk-fix-f5021cd14107da9a44c9114d20b7014fCopy head branch name to clipboard