Bump @sveltejs/vite-plugin-svelte from 3.1.2 to 4.0.1 in /client

Bumps [@sveltejs/vite-plugin-svelte](https://github.com/sveltejs/vite-plugin-svelte/tree/HEAD/packages/vite-plugin-svelte) from 3.1.2 to 4.0.1.
- [Release notes](https://github.com/sveltejs/vite-plugin-svelte/releases)
- [Changelog](https://github.com/sveltejs/vite-plugin-svelte/blob/main/packages/vite-plugin-svelte/CHANGELOG.md)
- [Commits](https://github.com/sveltejs/vite-plugin-svelte/commits/@sveltejs/vite-plugin-svelte@4.0.1/packages/vite-plugin-svelte)

---
updated-dependencies:
- dependency-name: "@sveltejs/vite-plugin-svelte"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

client/package.json

@@ -9,7 +9,7 @@
     "preview": "vite preview"
   },
   "devDependencies": {
-    "@sveltejs/vite-plugin-svelte": "^3.1.2",
+    "@sveltejs/vite-plugin-svelte": "^4.0.1",
     "sass": "^1.80.6",
     "svelte": "^4.2.19",
     "svelte-preprocess": "^6.0.3",