build(deps-dev): bump socket.io from 2.2.0 to 2.3.0

Bumps [socket.io](https://github.com/socketio/socket.io) from 2.2.0 to 2.3.0.
- [Release notes](https://github.com/socketio/socket.io/releases)
- [Commits](socketio/socket.io@2.2.0...2.3.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

package-lock.json

@@ -32,6 +32,6 @@
     "karma-junit-reporter": "^1.2.0",
     "karma-mocha-reporter": "^2.2.5",
     "karma-titanium-launcher": "^0.7.8",
-    "socket.io": "^2.2.0"
+    "socket.io": "^2.3.0"
   }
 }