ready for release into noetic/focal

[davefeilseifer]

this package passes pre-release tests:

generate_prerelease_script.py https://raw.githubusercontent.com/ros-infrastructure/ros_buildfarm_config/production/index.yaml noetic default ubuntu focal amd64 --custom-repo pr2_kinematics__custom-5:git:https://github.com/PR2/pr2_kinematics.git:kinetic-devel --level 0 --output-dir ./

[davefeilseifer]

ping @k-okada