Bumps [puma](https://github.com/puma/puma) from 3.12.2 to 4.3.3.
- [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/v3.12.2...v4.3.3)
Signed-off-by: dependabot[bot] <support@github.com>