cob_perception_common: 0.5.6-2 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `cob_perception_common` to `0.5.6-2`:

- upstream repository: https://github.com/ipa320/cob_perception_common.git
- release repository: https://github.com/ipa320/cob_perception_common-release.git
- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.11`
- previous version for package: `0.5.4-2`