Update Skeleton v2 package to support Svelte 5 peer dependency

Resolve the issue as described here:
https://github.com/skeletonlabs/skeleton/discussions/2887#discussioncomment-11038831

Update the following in the package.json:

```
"peerDependencies": {
	"svelte": "^3.56.0 || ^4.0.0 || ^5.0.0"
},
```