Change log for SOLARIS_SYSTEM

Date Changes
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.