Bump Submodules/AMReX-Hydro from bc4e5f6 to 8c596a6 (#268)

Bumps [Submodules/AMReX-Hydro](https://github.com/AMReX-Codes/AMReX-Hydro) from `bc4e5f6` to `8c596a6`.
- [Commits](AMReX-Fluids/AMReX-Hydro@bc4e5f6...8c596a6)

---
updated-dependencies:
- dependency-name: Submodules/AMReX-Hydro
  dependency-type: direct:production
...

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