Bump prettier from 2.3.0 to 2.3.1

Bumps [prettier](https://github.com/prettier/prettier) from 2.3.0 to 2.3.1.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](prettier/prettier@2.3.0...2.3.1)

---
updated-dependencies:
- dependency-name: prettier
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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