message: catalog: use the ownerBy relation to display owners
diff: * limitations under the License.
  */
  -import { Entity, ENTITY_DEFAULT_NAMESPACE } from '@backstage/catalog-model';
  +import {
  + Entity,
  + ENTITY_DEFAULT_NAMESPACE,
  + RELATION_OWNED_BY,
  + serializeEntityRef,
  +} from '@backstage/catalog-model';
  import {
  Card,
  CardContent,
  @@ -139,7 +144,20 @@ export function AboutCard({ entity, variant }: AboutCardProps) {
  </AboutField>
  <AboutField
  label="Owner"
  - value={entity?.spec?.owner as string}
  + value={entity?.relations
  + ?.filter(r => r.type === RELATION_OWNED_BY)
  + .map(({ target: { kind, name, namespace } }) =>
  + // TODO(Rugvip): we want to provide some utils for this
  + serializeEntityRef({
  + kind,
  + name,
  + namespace:
  + namespace === ENTITY_DEFAULT_NAMESPACE
  + ? undefined
  + : namespace,
  + }),
  + )
  + .join(', ')}
  gridSizes={{ xs: 12, sm: 6, lg: 4 }}
  />
  <AboutField
  