These are scripts that use the cms-meta-tools utilities to perform common CMS build functions. If you use the cms-meta-tools sample scripts in your repo, they are wrappers that ultimately call these scripts.
Calls the update_versions and update_external_versions tools. Both of these tools do nothing unless they find their corresponding config file in your repo.
Calls the copyright_license_check and go_lint tools. These tools do not require a config file in your repo to run, but if such a config file is present, it can be used to alter their default behavior. Without a config file they use sensible defaults that will work for most repos.