Bump serve-static and @adobe/aem-cli

Bumps [serve-static](https://github.com/expressjs/serve-static) to 1.16.2 and updates ancestor dependency [@adobe/aem-cli](https://github.com/adobe/helix-cli). 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 `@adobe/aem-cli` from 16.5.15 to 16.7.9
- [Release notes](https://github.com/adobe/helix-cli/releases)
- [Changelog](https://github.com/adobe/helix-cli/blob/main/CHANGELOG.md)
- [Commits](adobe/helix-cli@v16.5.15...v16.7.9)

---
updated-dependencies:
- dependency-name: serve-static
  dependency-type: indirect
- dependency-name: "@adobe/aem-cli"
  dependency-type: direct:development
...

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