nasa_r2_simulator: 0.5.5-0 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `nasa_r2_simulator` to `0.5.5-0`:

- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.10`
- previous version for package: `0.5.3-1`

Yeah, I had been thinking about changing them. Guess I actually should before I push.