Update socket.io packages to v3

Author: renovate-bot

package.json

@@ -20,7 +20,7 @@
     "js-priority-queue": "^0.1.5",
     "node-rsa": "^1.0.8",
     "repl": "^0.1.3",
-    "socket.io": "^2.3.0",
-    "socket.io-client": "^2.3.0"
+    "socket.io": "^3.0.0",
+    "socket.io-client": "^3.0.0"
   }
 }