Bump brakeman from 4.2.1 to 4.3.1 (#8872)

Bumps [brakeman](https://github.com/presidentbeef/brakeman) from 4.2.1 to 4.3.1.
- [Release notes](https://github.com/presidentbeef/brakeman/releases)
- [Changelog](https://github.com/presidentbeef/brakeman/blob/master/CHANGES.md)
- [Commits](https://github.com/presidentbeef/brakeman/compare/v4.2.1...v4.3.1

)

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