Bump mongoose from 8.5.2 to 8.8.4 in /examples/local-demo

Bumps [mongoose](https://github.com/Automattic/mongoose) from 8.5.2 to 8.8.4.
- [Release notes](https://github.com/Automattic/mongoose/releases)
- [Changelog](https://github.com/Automattic/mongoose/blob/master/CHANGELOG.md)
- [Commits](Automattic/mongoose@8.5.2...8.8.4)

---
updated-dependencies:
- dependency-name: mongoose
  dependency-type: indirect
...

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