Bump cross-spawn from 7.0.3 to 7.0.6

Bumps [cross-spawn](https://github.com/moxystudio/node-cross-spawn) from 7.0.3 to 7.0.6.
- [Changelog](https://github.com/moxystudio/node-cross-spawn/blob/master/CHANGELOG.md)
- [Commits](https://github.com/moxystudio/node-cross-spawn/compare/v7.0.3...v7.0.6

)

---
updated-dependencies:
- dependency-name: cross-spawn
  dependency-type: direct:production
...

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