Update terser-webpack-plugin (#2687)

Author: pustovalov

package.json

@@ -45,7 +45,7 @@
     "regenerator-runtime": "^0.13.7",
     "sass-loader": "^8.0.2",
     "style-loader": "^1.2.1",
-    "terser-webpack-plugin": "^3.0.2",
+    "terser-webpack-plugin": "^4.0.0",
     "webpack": "^4.44.1",
     "webpack-assets-manifest": "^3.1.1",
     "webpack-cli": "^3.3.12",