chore(playground): bump react-router from 7.1.1 to 7.1.5 (#1334)

Bumps [react-router](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router) from 7.1.1 to 7.1.5.
- [Release notes](https://github.com/remix-run/react-router/releases)
- [Changelog](https://github.com/remix-run/react-router/blob/main/packages/react-router/CHANGELOG.md)
- [Commits](https://github.com/remix-run/react-router/commits/[email protected]/packages/react-router)

---
updated-dependencies:
- dependency-name: react-router
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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