Bump svelte from 4.2.1 to 4.2.8 in /client

Bumps [svelte](https://github.com/sveltejs/svelte/tree/HEAD/packages/svelte) from 4.2.1 to 4.2.8.
- [Release notes](https://github.com/sveltejs/svelte/releases)
- [Changelog](https://github.com/sveltejs/svelte/blob/svelte@4.2.8/packages/svelte/CHANGELOG.md)
- [Commits](https://github.com/sveltejs/svelte/commits/svelte@4.2.8/packages/svelte)

---
updated-dependencies:
- dependency-name: svelte
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

client/package.json

@@ -11,7 +11,7 @@
   "devDependencies": {
     "@sveltejs/vite-plugin-svelte": "^2.4.6",
     "sass": "^1.60.0",
-    "svelte": "^4.2.1",
+    "svelte": "^4.2.8",
     "svelte-preprocess": "^5.0.4",
     "vite": "^4.4.9"
   },