Bump svelte from 4.2.17 to 4.2.18 in /frontend

Bumps [svelte](https://github.com/sveltejs/svelte/tree/HEAD/packages/svelte) from 4.2.17 to 4.2.18.
- [Release notes](https://github.com/sveltejs/svelte/releases)
- [Changelog](https://github.com/sveltejs/svelte/blob/svelte@4.2.18/packages/svelte/CHANGELOG.md)
- [Commits](https://github.com/sveltejs/svelte/commits/svelte@4.2.18/packages/svelte)

---
updated-dependencies:
- dependency-name: svelte
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

frontend/package.json

@@ -30,7 +30,7 @@
 		"postcss": "^8.4.35",
 		"prettier": "^3.3.1",
 		"prettier-plugin-svelte": "^3.2.3",
-		"svelte": "^4.2.7",
+		"svelte": "^4.2.18",
 		"svelte-check": "^3.8.0",
 		"tailwindcss": "^3.4.1",
 		"typescript": "^5.0.0",