Bump serve-static and @wp-playground/cli

Bumps [serve-static](https://github.com/expressjs/serve-static) to 1.16.2 and updates ancestor dependency [@wp-playground/cli](https://github.com/WordPress/wordpress-playground). These dependencies need to be updated together.


Updates `serve-static` from 1.15.0 to 1.16.2
- [Release notes](https://github.com/expressjs/serve-static/releases)
- [Changelog](https://github.com/expressjs/serve-static/blob/v1.16.2/HISTORY.md)
- [Commits](expressjs/serve-static@v1.15.0...v1.16.2)

Updates `@wp-playground/cli` from 1.0.29 to 1.2.3
- [Changelog](https://github.com/WordPress/wordpress-playground/blob/trunk/CHANGELOG.md)
- [Commits](WordPress/wordpress-playground@v1.0.29...v1.2.3)

---
updated-dependencies:
- dependency-name: serve-static
  dependency-version: 1.16.2
  dependency-type: indirect
- dependency-name: "@wp-playground/cli"
  dependency-version: 1.2.3
  dependency-type: direct:development
...

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

Author: dependabot[bot]