Bump sebastian/object-enumerator from 4.0.3 to 4.0.4

Bumps [sebastian/object-enumerator](https://github.com/sebastianbergmann/object-enumerator) from 4.0.3 to 4.0.4.
- [Release notes](https://github.com/sebastianbergmann/object-enumerator/releases)
- [Changelog](https://github.com/sebastianbergmann/object-enumerator/blob/master/ChangeLog.md)
- [Commits](https://github.com/sebastianbergmann/object-enumerator/compare/4.0.3...4.0.4

)

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