Update dependency terser-webpack-plugin to v2.2.2 (#3890)

Author: renovate-bot

package-lock.json

@@ -109,7 +109,7 @@
     "semver": "6.3.0",
     "source-map-loader": "0.2.4",
     "svg-inline-loader": "0.8.0",
-    "terser-webpack-plugin": "2.2.1",
+    "terser-webpack-plugin": "2.2.2",
     "travis-size-report": "1.1.0",
     "uuid": "3.3.3",
     "webpack": "4.41.2",