chore(webpack): switch to new css minimizer plugin

webpack.config.js

@@ -12,7 +12,7 @@ const { execSync } = require('child_process');
 const request = require('request-promise');
 
 const MiniCssExtractPlugin = require('mini-css-extract-plugin');
-const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
+const CssMinimizerWebpackPlugin = require('css-minimizer-webpack-plugin');
 const { WebpackManifestPlugin } = require('webpack-manifest-plugin');
 const { CleanWebpackPlugin } = require('clean-webpack-plugin');
 const CopyPlugin = require('copy-webpack-plugin');
@@ -287,13 +287,7 @@ async function webpackConfig() {
             sourceMap: true
           }
         }),
-        new OptimizeCSSAssetsPlugin({
-          cssProcessorOptions: {
-            map: {
-              inline: false
-            }
-          }
-        })
+        new CssMinimizerWebpackPlugin()
       ],
       moduleIds: 'named',
       chunkIds: 'named',