Bump @oclif/plugin-help from 5.1.10 to 5.1.12

Bumps [@oclif/plugin-help](https://github.com/oclif/plugin-help) from 5.1.10 to 5.1.12.
- [Release notes](https://github.com/oclif/plugin-help/releases)
- [Changelog](https://github.com/oclif/plugin-help/blob/main/CHANGELOG.md)
- [Commits](oclif/plugin-help@v5.1.10...v5.1.12)

---
updated-dependencies:
- dependency-name: "@oclif/plugin-help"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]