Bump socket.io from 3.0.2 to 3.0.3

Bumps [socket.io](https://github.com/socketio/socket.io) from 3.0.2 to 3.0.3.
- [Release notes](https://github.com/socketio/socket.io/releases)
- [Changelog](https://github.com/socketio/socket.io/blob/master/CHANGELOG.md)
- [Commits](socketio/socket.io@3.0.2...3.0.3)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -21,7 +21,7 @@
     "morgan": "^1.10.0",
     "pem": "^1.14.4",
     "pug": "^3.0.0",
-    "socket.io": "^3.0.2",
+    "socket.io": "^3.0.3",
     "sqlite3": "^5.0.0"
   },
   "devDependencies": {