⬆ Bump @tanstack/router-devtools from 1.139.3 to 1.139.12 in /frontend

Bumps [@tanstack/router-devtools](https://github.com/TanStack/router/tree/HEAD/packages/router-devtools) from 1.139.3 to 1.139.12.
- [Release notes](https://github.com/TanStack/router/releases)
- [Commits](https://github.com/TanStack/router/commits/v1.139.12/packages/router-devtools)

---
updated-dependencies:
- dependency-name: "@tanstack/router-devtools"
  dependency-version: 1.139.12
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]