fix(deps): bump @oclif/plugin-help from 6.0.17 to 6.0.20

Bumps [@oclif/plugin-help](https://github.com/oclif/plugin-help) from 6.0.17 to 6.0.20.
- [Release notes](https://github.com/oclif/plugin-help/releases)
- [Changelog](https://github.com/oclif/plugin-help/blob/main/CHANGELOG.md)
- [Commits](oclif/plugin-help@6.0.17...6.0.20)

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

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