Bump rack-attack from 6.3.0 to 6.3.1 (#13849)

Bump rack-attack from 6.3.0 to 6.3.1 (#13849)

Bumps [rack-attack](https://github.com/kickstarter/rack-attack) from 6.3.0 to 6.3.1.
- [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/v6.3.0...v6.3.1)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>