This function list all the versions of a deposit associated with a parent id. The parent id is used to identify a set of works that are different versions of the same work. The parent id is provided from the Zenodo API. If you download a JSON representation of the deposit (export to json), there will be an attribute in that json called parent that looks like "https://zenodo.org/api/records/15020049". The 8 digit string at the end of the url is the parent id.