fix: upgrade react-router from 5.1.2 to 5.2.1#1805

mtrezza merged 2 commits intomasterparse-community/parse-dashboard:masterfrom

snyk-upgrade-0fa02442b3d72d16db317bbaf8f85edeparse-community/parse-dashboard:snyk-upgrade-0fa02442b3d72d16db317bbaf8f85edeCopy head branch name to clipboard