chore: bump prettier (#6154)

# Motivation

Bump Prettier to the latest version.  
[Latest minor fixes and numerous bug
fixes](https://prettier.io/blog/2024/11/26/3.4.0.html)

This update is free since no format changes are necessary.

# Changes

- `npm i prettier@latest prettier-plugin-organize-imports@latest
prettier-plugin-svelte@latest`
- `npm run format`


# Tests

- Not necessary

# Todos

- [ ] Add entry to changelog (if necessary).
Not necessary

frontend/package.json

@@ -52,9 +52,9 @@
     "jsdom": "^25.0.1",
     "node-fetch": "^3.3.2",
     "postcss": "^8.4.47",
-    "prettier": "^3.3.3",
-    "prettier-plugin-organize-imports": "^4.0.0",
-    "prettier-plugin-svelte": "^3.2.6",
+    "prettier": "^3.4.2",
+    "prettier-plugin-organize-imports": "^4.1.0",
+    "prettier-plugin-svelte": "^3.3.2",
     "sass": "^1.69.4",
     "svelte": "^4.2.19",
     "svelte-check": "^4.0.2",