Bump rubocop-rails from 2.12.2 to 2.12.4
Bump rubocop-rails from 2.12.2 to 2.12.4

Bumps [rubocop-rails](https://github.com/rubocop/rubocop-rails) from 2.12.2 to 2.12.4.
- [Release notes](https://github.com/rubocop/rubocop-rails/releases)
- [Changelog](https://github.com/rubocop/rubocop-rails/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rubocop/rubocop-rails/compare/v2.12.2...v2.12.4)

---
updated-dependencies:
- dependency-name: rubocop-rails
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
kaspernj/active-record-transactioner,kaspernj/active-record-transactioner,kaspernj/active-record-transactioner