Change log for SOLARIS_SYSTEM

Date Changes
2025-04-10 Enhancement:
- Added GROK patterns to support new format of syslog logs.
- Added GROK patterns to parse IP addresses in correct fields.
- event.idm.read_only_udm.target.ip,event.idm.read_only_udm.target.asset.ip: Removed mapping of `HOST` from `event.idm.read_only_udm.target.ip` and `event.idm.read_only_udm.target.asset.ip` UDM field.
- event.idm.read_only_udm.principal.ip,event.idm.read_only_udm.principal.asset.ip: Mapped `HOST` raw log field with `event.idm.read_only_udm.principal.ip` and `event.idm.read_only_udm.principal.asset.ip` UDM field.
- event.idm.read_only_udm.target.url: Newly mapped `target_url` raw log field with `event.idm.read_only_udm.target.url` UDM field.
- Added a null conditional check before mapping `desc` to `event.idm.read_only_udm.security_result.description` UDM field.
- event.idm.read_only_udm.metadata.event_type: Set the `event.idm.read_only_udm.metadata.event_type` to `NETWORK_CONNECTION` if both `dstIp` and `prin_ip` are present.
2025-04-08 Enhancement:
- Added Grok patterns to parse new format of logs.
- metadata.event_timestamp: Newly mapped "ts" raw log field with `metadata.event_timestamp` UDM field.
2024-12-29 Enhancement:
- Added support for a new format of syslog logs.
- Mapped "prin_ip" to ""principal.ip".
2024-12-06 Enhancement:
- Added support for a new format of syslog logs.
2024-04-05 Enhancement:
- Mapped "targetDisplayName" to "target.user.user_display_name".
- When "process" is "sudo", then mapped "user" to "principal.user.user_display_name".
2024-02-13 Newly created parser.