Bump actions/setup-python from 2.2.2 to 2.3.1 (#192)

Bump actions/setup-python from 2.2.2 to 2.3.1 (#192)

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 2.2.2 to 2.3.1.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v2.2.2...v2.3.1)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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