build(deps): bump @octokit/rest from 16.28.8 to 16.28.9

Bumps [@octokit/rest](https://github.com/octokit/rest.js) from 16.28.8 to 16.28.9.
- [Release notes](https://github.com/octokit/rest.js/releases)
- [Commits](octokit/rest.js@v16.28.8...v16.28.9)

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