Bump json5, url-loader, babel-loader, css-loader, file-loader, html-webpack-plugin, image-webpack-loader, mini-css-extract-plugin, postcss-loader, sass-loader, style-loader, webpack and webpack-cli#21

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dependabot/npm_and_yarn/json5-and-url-loader-and-babel-loader-and-css-loader-and-file-loader-and-html-webpack-plugin-and-image-webpack-loader-and-mini-css-extract-plugin-and-postcss-loader-and-sass-loader-and-style-loader-and-webpack-and-webpack-cli-2.2.3oldroute/django-box-1:dependabot/npm_and_yarn/json5-and-url-loader-and-babel-loader-and-css-loader-and-file-loader-and-html-webpack-plugin-and-image-webpack-loader-and-mini-css-extract-plugin-and-postcss-loader-and-sass-loader-and-style-loader-and-webpack-and-webpack-cli-2.2.3Copy head branch name to clipboard