Bump rails from 5.2.4.3 to 5.2.4.4 (#14792)

Bumps [rails](https://github.com/rails/rails) from 5.2.4.3 to 5.2.4.4.
- [Release notes](https://github.com/rails/rails/releases)
- [Commits](https://github.com/rails/rails/compare/v5.2.4.3...v5.2.4.4

)

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