fix(deps): update dependency uglifyjs-webpack-plugin to v2.2.0 (#231)

Author: renovate[bot]

Phonebook.Frontend/package-lock.json

@@ -67,7 +67,7 @@
     "raven-js": "3.27.2",
     "rxjs": "6.5.3",
     "uglify-es": "3.3.9",
-    "uglifyjs-webpack-plugin": "2.1.3",
+    "uglifyjs-webpack-plugin": "2.2.0",
     "zone.js": "0.10.2"
   },
   "devDependencies": {