rtshell_core: 3.0.0-3 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `rtshell_core`:
- previous version: `3.0.0-2`
- new version: `3.0.0-3`
- distro file: `hydro/distribution.yaml`
- bloom version: `0.4.8`