Change log for CYBERARK_PAM

Date Changes
2024-11-28 Enhancement:
- Added a Grok pattern to parse "metadata.version".
2024-11-21 Enhancement:
- Mapped "act" to "metadata.product_event_type".
- Mapped "app" to "target.application".
2024-10-29 - Added support for new log patterns.
2024-05-05 - Newly created parser.