Bump rails from 5.2.4.4 to 5.2.4.5 (#15729)

Bumps [rails](https://github.com/rails/rails) from 5.2.4.4 to 5.2.4.5.
- [Release notes](https://github.com/rails/rails/releases)
- [Commits](https://github.com/rails/rails/compare/v5.2.4.4...v5.2.4.5

)

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