Bumps [rack-attack](https://github.com/kickstarter/rack-attack) from 5.4.1 to 5.4.2.
- [Release notes](https://github.com/kickstarter/rack-attack/releases)
- [Changelog](https://github.com/kickstarter/rack-attack/blob/master/CHANGELOG.md)
- [Commits](https://github.com/kickstarter/rack-attack/compare/v5.4.1...v5.4.2

)

Signed-off-by: dependabot[bot] <support@dependabot.com>