Update dependency terser-webpack-plugin to v5

Author: renovate-bot

Diff for: package.json

@@ -94,7 +94,7 @@
     "semver": "7.3.2",
     "source-map-loader": "1.1.2",
     "svg-inline-loader": "0.8.2",
-    "terser-webpack-plugin": "^4.2.3",
+    "terser-webpack-plugin": "^5.0.0",
     "typescript": "4.0.5",
     "webpack": "4.44.2",
     "webpack-cli": "4.1.0",