Bump rails-controller-testing from 1.0.2 to 1.0.3 (#9417)

Bumps [rails-controller-testing](https://github.com/rails/rails-controller-testing) from 1.0.2 to 1.0.3.
- [Release notes](https://github.com/rails/rails-controller-testing/releases)
- [Commits](https://github.com/rails/rails-controller-testing/compare/v1.0.2...v1.0.3

)

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