Inconsistency between clean_rosdep_yaml.py and validation scripts

[amalnanavati]

As discovered in #41118 , there is an inconsistency between the changes that script/clean_rosdep_yaml.py does and what is expected by the CI. Specifically, that script tries to remove single quotes around gentoo entries in the rosdep, whereas single quotes are required.

Perhaps script/clean_rosdep_yaml.py should be updated to enforce that gentoo entries have single quotes in them? That will restore the script as a useful tool for rosdep contributors. (As it stands, the script is not as useful as it could be, because running it makes hundreds of lines of changes.)

Potentially related to #41060 and #41059 .