Bumps [sidekiq](https://github.com/mperham/sidekiq) from 6.0.4 to 6.0.7.
- [Release notes](https://github.com/mperham/sidekiq/releases)
- [Changelog](https://github.com/mperham/sidekiq/blob/master/Changes.md)
- [Commits](https://github.com/mperham/sidekiq/compare/v6.0.4...v6.0.7

)

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