build(deps): bump dexie from 2.0.4 to 3.2.2 in /demo

Bumps [dexie](https://github.com/dfahlander/Dexie.js) from 2.0.4 to 3.2.2.
- [Release notes](https://github.com/dfahlander/Dexie.js/releases)
- [Commits](dexie/Dexie.js@v2.0.4...v3.2.2)

---
updated-dependencies:
- dependency-name: dexie
  dependency-type: direct:production
...

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

Author: dependabot[bot]