Bump @octokit/rest from 18.0.0 to 18.0.12

Bumps [@octokit/rest](https://github.com/octokit/rest.js) from 18.0.0 to 18.0.12.
- [Release notes](https://github.com/octokit/rest.js/releases)
- [Commits](octokit/rest.js@v18.0.0...v18.0.12)

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

Author: dependabot[bot]