chore: add chart maintainers

Author: egabancho

charts/invenio/Chart.yaml

@@ -13,6 +13,9 @@ keywords:
   - multimedia-repository
 type: application
 version: 0.5.3
+maintainers:
+  - name: CERN
+    email: [email protected]
 dependencies:
   - name: opensearch
     condition: opensearch.enabled