build(deps): bump esbuild and tsx in /examples/clawrouter

Bumps [esbuild](https://github.com/evanw/esbuild) to 0.28.1 and updates ancestor dependency [tsx](https://github.com/privatenumber/tsx). These dependencies need to be updated together.


Updates `esbuild` from 0.27.4 to 0.28.1
- [Release notes](https://github.com/evanw/esbuild/releases)
- [Changelog](https://github.com/evanw/esbuild/blob/main/CHANGELOG.md)
- [Commits](evanw/esbuild@v0.27.4...v0.28.1)

Updates `tsx` from 4.21.0 to 4.22.4
- [Release notes](https://github.com/privatenumber/tsx/releases)
- [Changelog](https://github.com/privatenumber/tsx/blob/master/release.config.cjs)
- [Commits](privatenumber/tsx@v4.21.0...v4.22.4)

---
updated-dependencies:
- dependency-name: esbuild
  dependency-version: 0.28.1
  dependency-type: indirect
- dependency-name: tsx
  dependency-version: 4.22.4
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]