Update dependency socket.io to v4 [SECURITY]

Author: renovate[bot]

SmartControl.WebApp/slides/package.json

@@ -25,7 +25,7 @@
     "underscore": "~1.9.0",
     "express": "~2.5.9",
     "mustache": "~3.1.0",
-    "socket.io": "~0.9.16"
+    "socket.io": "~4.7.0"
   },
   "devDependencies": {
     "grunt-contrib-qunit": "3.1.0",