deps: bump @sideway/formula from 3.0.0 to 3.0.1 (#739)

Bumps [@sideway/formula](https://github.com/sideway/formula) from 3.0.0 to 3.0.1.
- [Release notes](https://github.com/sideway/formula/releases)
- [Commits](hapijs/formula@v3.0.0...v3.0.1)

---
updated-dependencies:
- dependency-name: "@sideway/formula"
  dependency-type: indirect
...

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