dynamic_reconfigure is core packge for ROS1, but not updated for 1 year.
Can some maintainer check and merge PRs?
There are one big issue on noetic branch, and similar PRs are posted.
https://github.com/ros/dynamic_reconfigure/pull/161
https://github.com/ros/dynamic_reconfigure/pull/177
https://github.com/ros/dynamic_reconfigure/pull/182