build(deps-dev): bump webpack-dev-server from 4.2.0 to 4.7.4#66

dependabot[bot] wants to merge 1 commit intomasterchenxsan/webpack.js.org:masterfrom

dependabot/npm_and_yarn/webpack-dev-server-4.7.4chenxsan/webpack.js.org:dependabot/npm_and_yarn/webpack-dev-server-4.7.4Copy head branch name to clipboard