Bump json5, webpack, webpack-cli and css-loader in /webpackdemo#40

dependabot[bot] wants to merge 1 commit intomasterliusCoding/vue-learning:masterfrom

dependabot/npm_and_yarn/webpackdemo/json5-and-webpack-and-webpack-cli-and-css-loader-2.2.3liusCoding/vue-learning:dependabot/npm_and_yarn/webpackdemo/json5-and-webpack-and-webpack-cli-and-css-loader-2.2.3Copy head branch name to clipboard