fix: play-with-docker/Portus/Portus.1/package.json & play-with-docker/Portus/Portus.1/yarn.lock to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-JSON5-3182856

Author: snyk-bot

play-with-docker/Portus/Portus.1/package.json

@@ -20,7 +20,7 @@
     "jquery": "^2.2.1",
     "jquery-ujs": "^1.2.1",
     "stats-webpack-plugin": "^0.4.3",
-    "webpack": "^2.2.1"
+    "webpack": "^5.0.0"
   },
   "babel": {
     "presets": [