Bump Submodules/AMReX-Hydro from 8c596a6 to 2b89ad7 (#304)

Bumps [Submodules/AMReX-Hydro](https://github.com/AMReX-Codes/AMReX-Hydro) from `8c596a6` to `2b89ad7`.
- [Commits](AMReX-Fluids/AMReX-Hydro@8c596a6...2b89ad7)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>