chore: bump engine.io-parser to version 5.0.3

In order to make sure the types added in [1] are included.

[1]: socketio/engine.io-parser@ad5bd7d

Author: darrachequesne

package-lock.json

@@ -41,7 +41,7 @@
   "dependencies": {
     "@socket.io/component-emitter": "~3.1.0",
     "debug": "~4.3.1",
-    "engine.io-parser": "~5.0.0",
+    "engine.io-parser": "~5.0.3",
     "ws": "~8.2.3",
     "xmlhttprequest-ssl": "~2.0.0"
   },