Change log for WALLIX_BASTION

Date Changes
2025-04-10 Enhancement:
- event.idm.read_only_udm.principal.hostname: Removed mapping of `hostname` from `event.idm.read_only_udm.principal.hostname` UDM field.
- event.idm.read_only_udm.principal.asset.hostname: Removed mapping of `hostname` from `event.idm.read_only_udm.principal.asset.hostname` UDM field.
- event.idm.read_only_udm.intermediary.hostname: Mapped `hostname` raw log field with `event.idm.read_only_udm.intermediary.hostname` UDM field
2024-11-28 Enhancement:
- Added support to parse "metadata.event_timestamp" for all time zones.
2024-11-20 Enhancement:
- Added a Grok pattern to extract the date and to properly map its value to "metadata.event_timestamp".
2024-10-29 Enhancement:
- Added support for new log patterns.
2024-06-28 New:
- Newly created parser.