chore(deps): bump xmlhttprequest-ssl and engine.io-client in /examples/latency (#661)

Bumps [xmlhttprequest-ssl](https://github.com/mjwwit/node-XMLHttpRequest) to 1.6.3 and updates ancestor dependency [engine.io-client](https://github.com/socketio/engine.io-client). These dependencies need to be updated together.


Updates `xmlhttprequest-ssl` from 1.5.5 to 1.6.3
- [Release notes](https://github.com/mjwwit/node-XMLHttpRequest/releases)
- [Commits](mjwwit/node-XMLHttpRequest@1.5.5...1.6.3)

Updates `engine.io-client` from 4.0.0 to 4.1.4
- [Release notes](https://github.com/socketio/engine.io-client/releases)
- [Changelog](https://github.com/socketio/engine.io-client/blob/main/CHANGELOG.md)
- [Commits](socketio/engine.io-client@4.0.0...4.1.4)

---
updated-dependencies:
- dependency-name: xmlhttprequest-ssl
  dependency-type: indirect
- dependency-name: engine.io-client
  dependency-type: direct:production
...

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Diff for: examples/latency/package-lock.json

@@ -4,7 +4,7 @@
   "dependencies": {
     "enchilada": "0.13.0",
     "engine.io": "^4.1.2",
-    "engine.io-client": "^4.0.0",
+    "engine.io-client": "^4.1.4",
     "express": "^4.17.1",
     "smoothie": "1.19.0"
   }