⬆ Bump @tanstack/router-devtools from 1.19.1 to 1.121.21 in /frontend

Bumps [@tanstack/router-devtools](https://github.com/TanStack/router/tree/HEAD/packages/router-devtools) from 1.19.1 to 1.121.21.
- [Release notes](https://github.com/TanStack/router/releases)
- [Commits](https://github.com/TanStack/router/commits/v1.121.21/packages/router-devtools)

---
updated-dependencies:
- dependency-name: "@tanstack/router-devtools"
  dependency-version: 1.121.21
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]