chore(deps): update dependency prettier-plugin-svelte to v4 (#129)

Signed-off-by: Jan-Hendrik Spahn <jan-hendrik.spahn@soptim.de>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Jan-Hendrik Spahn <jan-hendrik.spahn@soptim.de>

Author: renovate[bot]

frontend/LICENSES-THIRD-PARTY.md

@@ -185,7 +185,7 @@
 
 ### prettier-plugin-svelte
 - **Package:** prettier-plugin-svelte
-- **Version:** 3.5.2
+- **Version:** 4.0.1
 - **License:** MIT
 - **URL:** [https://github.com/sveltejs/prettier-plugin-svelte#readme](https://github.com/sveltejs/prettier-plugin-svelte#readme)
 

frontend/package-lock.json

@@ -31,7 +31,7 @@
         "jsdom": "^29.0.0",
         "postcss": "^8.4.47",
         "prettier": "^3.5.0",
-        "prettier-plugin-svelte": "^3.3.3",
+        "prettier-plugin-svelte": "^4.0.0",
         "prettier-plugin-tailwindcss": "^0.8.0",
         "svelte": "^5.0.0",
         "svelte-eslint-parser": "^1.0.0",