dynamixel_pro_arm_description: 0.8.1-0 in 'hydro/release.yaml' [bloom]

Increasing version of package(s) in repository `dynamixel_pro_arm_description`:
- previous version: `null`
- new version: `0.8.1-0`
- distro file: `hydro/release.yaml`
- bloom version: `0.4.4`