Change log for NOKIA_ROUTER

Date Changes
2025-05-15 - `event.idm.read_only_udm.intermediary.ip`: Newly mapped `src_ip` raw log field with `event.idm.read_only_udm.intermediary.ip` UDM field.
- `event.idm.read_only_udm.intermediary.asset.ip`: Newly mapped `src_ip` raw log field with `event.idm.read_only_udm.intermediary.asset.ip` UDM field.
2023-11-27 - Newly created parser.