Bump optionator from 0.9.1 to 0.9.3

Bumps [optionator](https://github.com/gkz/optionator) from 0.9.1 to 0.9.3.
- [Changelog](https://github.com/gkz/optionator/blob/master/CHANGELOG.md)
- [Commits](gkz/optionator@0.9.1...0.9.3)

---
updated-dependencies:
- dependency-name: optionator
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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