Bumps [annotate](https://github.com/ctran/annotate_models) from 2.7.3 to 2.7.4.
- [Release notes](https://github.com/ctran/annotate_models/releases)
- [Changelog](https://github.com/ctran/annotate_models/blob/develop/CHANGELOG.rdoc)
- [Commits](https://github.com/ctran/annotate_models/compare/v2.7.3...v2.7.4

)

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