chore(deps-dev): bump serve-index from 1.9.1 to 1.9.2

Bumps [serve-index](https://github.com/expressjs/serve-index) from 1.9.1 to 1.9.2.
- [Release notes](https://github.com/expressjs/serve-index/releases)
- [Changelog](https://github.com/expressjs/serve-index/blob/master/HISTORY.md)
- [Commits](expressjs/serve-index@v1.9.1...v1.9.2)

---
updated-dependencies:
- dependency-name: serve-index
  dependency-version: 1.9.2
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]