Bump puma from 4.3.8 to 4.3.9 (#2954)

Bumps [puma](https://github.com/puma/puma) from 4.3.8 to 4.3.9.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](https://github.com/puma/puma/compare/v4.3.8...v4.3.9

)

---
updated-dependencies:
- dependency-name: puma
  dependency-type: direct:production
...

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