fix: align with gts-spec v0.7.0#18

Artifizer merged 1 commit intoGlobalTypeSystem:mainGlobalTypeSystem/gts-python:mainfrom

KvizadSaderah:fix/gts-spec-v0.7-complianceKvizadSaderah/gts-python:fix/gts-spec-v0.7-complianceCopy head branch name to clipboard