chore(deps): update dependency prettier-plugin-svelte to v4

Author: renovate[bot]

frontend/package.json

@@ -23,7 +23,7 @@
     "eslint-plugin-format": "^2.0.0",
     "eslint-plugin-svelte": "^3.0.0",
     "prettier": "^3.3.2",
-    "prettier-plugin-svelte": "^3.2.6",
+    "prettier-plugin-svelte": "^4.0.0",
     "svelte": "^5.0.0",
     "svelte-check": "^4.0.0",
     "svelte-eslint-parser": "^1.0.0",