fix(deps): bump @oclif/core from 3.15.0 to 3.20.0

Bumps [@oclif/core](https://github.com/oclif/core) from 3.15.0 to 3.20.0.
- [Release notes](https://github.com/oclif/core/releases)
- [Changelog](https://github.com/oclif/core/blob/main/CHANGELOG.md)
- [Commits](oclif/core@3.15.0...3.20.0)

---
updated-dependencies:
- dependency-name: "@oclif/core"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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