chore(deps-dev): bump @tanstack/svelte-query in /src/frontend (#58)

Bumps [@tanstack/svelte-query](https://github.com/TanStack/query/tree/HEAD/packages/svelte-query) from 6.0.14 to 6.0.15.
- [Release notes](https://github.com/TanStack/query/releases)
- [Changelog](https://github.com/TanStack/query/blob/main/packages/svelte-query/CHANGELOG.md)
- [Commits](https://github.com/TanStack/query/commits/@tanstack/svelte-query@6.0.15/packages/svelte-query)

---
updated-dependencies:
- dependency-name: "@tanstack/svelte-query"
  dependency-version: 6.0.15
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]

src/frontend/package-lock.json

@@ -30,7 +30,7 @@
 		"@tailwindcss/forms": "^0.5.10",
 		"@tailwindcss/typography": "^0.5.19",
 		"@tailwindcss/vite": "^4.1.17",
-		"@tanstack/svelte-query": "^6.0.10",
+		"@tanstack/svelte-query": "^6.0.15",
 		"@tanstack/svelte-query-devtools": "^6.0.3",
 		"@types/node": "^25",
 		"@types/qrcode": "^1.5.6",