Bump monk from 7.3.3 to 7.3.4

Bumps [monk](https://github.com/Automattic/monk) from 7.3.3 to 7.3.4.
- [Release notes](https://github.com/Automattic/monk/releases)
- [Changelog](https://github.com/Automattic/monk/blob/master/CHANGELOG.md)
- [Commits](https://github.com/Automattic/monk/commits)

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