Enable Packit CI for rpms/python3-rpm

Author: hroncok

secrets/packit/prod/packit-service.yaml.j2

@@ -228,6 +228,7 @@ enabled_projects_for_fedora_ci:
   - https://src.fedoraproject.org/rpms/python3.6
   - https://src.fedoraproject.org/rpms/python3.9
   - https://src.fedoraproject.org/rpms/python3-docs
+  - https://src.fedoraproject.org/rpms/python3-rpm
   - https://src.fedoraproject.org/rpms/python-aaargh
   - https://src.fedoraproject.org/rpms/python-adafruit-board-toolkit
   - https://src.fedoraproject.org/rpms/python-admesh