[Snyk] Security upgrade react-router-dom from 4.3.1 to 6.0.0#13

Falieson wants to merge 1 commit intoprotoFalieson/2018-typescript-react-app:protofrom

snyk-fix-f62e0a55abebfd5c997ab8d3e95c2579Falieson/2018-typescript-react-app:snyk-fix-f62e0a55abebfd5c997ab8d3e95c2579Copy head branch name to clipboard