bump webpack-dev-server from 3.9.0 to 5.2.1#4

dependabot[bot] wants to merge 1 commit intomasterinterviewstreet/reactour:masterfrom

dependabot/npm_and_yarn/webpack-dev-server-5.2.1interviewstreet/reactour:dependabot/npm_and_yarn/webpack-dev-server-5.2.1Copy head branch name to clipboard