build(deps): bump @octokit/auth-app from 5.0.6 to 6.0.0

Bumps [@octokit/auth-app](https://github.com/octokit/auth-app.js) from 5.0.6 to 6.0.0.
- [Release notes](https://github.com/octokit/auth-app.js/releases)
- [Commits](octokit/auth-app.js@v5.0.6...v6.0.0)

---
updated-dependencies:
- dependency-name: "@octokit/auth-app"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]