build(deps-dev): bump svelte from 5.34.3 to 5.34.7 in /frontend (#512)

Bumps [svelte](https://github.com/sveltejs/svelte/tree/HEAD/packages/svelte) from 5.34.3 to 5.34.7.
- [Release notes](https://github.com/sveltejs/svelte/releases)
- [Changelog](https://github.com/sveltejs/svelte/blob/main/packages/svelte/CHANGELOG.md)
- [Commits](https://github.com/sveltejs/svelte/commits/svelte@5.34.7/packages/svelte)

---
updated-dependencies:
- dependency-name: svelte
  dependency-version: 5.34.7
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

frontend/package-lock.json

@@ -32,7 +32,7 @@
 		"stylelint": "^16.20.0",
 		"stylelint-config-html": "^1.1.0",
 		"stylelint-config-standard": "^38.0.0",
-		"svelte": "^5.33.18",
+		"svelte": "^5.34.8",
 		"svelte-check": "^4.1.5",
 		"tslib": "^2.8.0",
 		"typescript": "^5.8.3",