github: lower license spdx id

Author: alejandromumo

invenio_rdm_records/services/github/release.py

@@ -64,7 +64,9 @@ def metadata(self):
 
         # Add default license if not yet added
         if not output.get("rights"):
-            output.update({"rights": [{"id": metadata.repo_license or "cc-by-4.0"}]})
+            output.update(
+                {"rights": [{"id": metadata.repo_license.lower() or "cc-by-4.0"}]}
+            )
         return output
 
     def get_custom_fields(self):