When you run npm create ionic-svelte-app@latest, you get a Svelte 4 app.

However, the demo-app in this repo is still on Svelte 3. It would be great to keep the demo-app package.json in sync with the repo's package.json to ensure the examples work as expected.

Potentially part of https://github.com/Tommertom/svelte-ionic-app/issues/93