Bump rails from 5.2.4.1 to 5.2.4.2
Bump rails from 5.2.4.1 to 5.2.4.2

Bumps [rails](https://github.com/rails/rails) from 5.2.4.1 to 5.2.4.2.
- [Release notes](https://github.com/rails/rails/releases)
- [Commits](https://github.com/rails/rails/compare/v5.2.4.1...v5.2.4.2)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
alphagov/release,alphagov/release,alphagov/release