message: ci: fix missing spec.owner in ownerscheck.star.
  The **spec was dropped in when building the struct to pass around. This lost the owner info,
  resulting in errors such as
diff: @@ -60,6 +60,7 @@ def _get_relevant_specs(specs, changed_files):
  status_label = spec.get("github_status_label", "")
  if files:
  relevant.append(struct(files=files,
  + owner=spec.owner,
  path_match=path_match,
  allow_global_approval=allow_global_approval,
  status_label=status_label))
  