Bump rack-attack from 5.4.1 to 5.4.2 (#2348)
Bump rack-attack from 5.4.1 to 5.4.2 (#2348)

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] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
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