build(deps): Bump external/Phi from f72e0d2 to bb0409a

Bumps [external/Phi](https://github.com/AMS21/Phi) from `f72e0d2` to `bb0409a`.
- [Commits](AMS21/Phi@f72e0d2...bb0409a)

---
updated-dependencies:
- dependency-name: external/Phi
  dependency-type: direct:production
...

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