chore(deps): update dependency @sveltejs/vite-plugin-svelte to v6

Author: renovate[bot]

package.json

@@ -9,7 +9,7 @@
     "preview": "vite preview"
   },
   "devDependencies": {
-    "@sveltejs/vite-plugin-svelte": "^5.0.3",
+    "@sveltejs/vite-plugin-svelte": "^6.1.1",
     "svelte": "^5.28.1",
     "vite": "^6.3.5"
   },