Change log for PAN_PANORAMA

Date Changes
2025-04-03 Enhancement:
- Added support to parse `event_ts` with date format `MMM d HH:mm:ss` by writing a grok pattern to fetch year from the log.
- event.idm.read_only_udm.metadata.event_timestamp: Newly mapped `event_ts_1` field with `event.idm.read_only_udm.metadata.event_timestamp` UDM field.
2025-03-18 Enhancement:
- Added a Grok pattern to parse "from_ip" to "principal.ip" and "principal.asset.ip" for different log formats.
2025-03-18 Enhancement:
- Added a Grok pattern to parse "from_ip" to "principal.ip" and "principal.asset.ip" for different log formats.
2025-03-12 Enhancement:
- Added a Grok pattern to parse "event_ts" and "firewall_name".
- Mapped "event_ts" to "metadata.event_timestamp".
2025-02-27 Enhancement:
- Added a Grok pattern to parse "from_ip" to "principal.ip" and "principal.asset.ip".
2025-01-30 Enhancement:
- Added a new Grok pattern for "user_description".
- Mapped "user_description" to "security_result.description".
2025-01-20 Enhancement:
- Modified mapping for "firewall_name" from "principal.hostname" to "intermediary.hostname".
- Mapped "column53" to "principal.hostname" and "principal.asset.hostname".
2024-12-11 Enhancement:
- Added support for CSV logs where "type" is equal to "SYSTEM".
2024-12-10 Enhancement:
- Mapped "firewall_name" to "principal.hostname" and "principal.asset.hostname".
- Mapped "column15" to "security_result.summary".
2024-09-10 Enhancement:
- Removed duplicate mapping for "security_result.detection_fields".
- Modified field value for "metadata.product_event_type".
2024-09-02 Enhancement:
- Mapped "sub_type" to "additional.fields".
2024-07-19 Enhancement:
- Implemented parsing for 'Threat' subtype and modified existing parsers to accurately populate the corresponding UDM field.
- Added support for CSV logs where "type" is equal to "CONFIG".
2024-07-10 Enhancement:
- Added support for "USERID" CSV logs.
2024-07-09 Enhancement:
- When "type" is "SYSTEM" then mapped "sub_type" to "security_result.detection_fields".
2024-06-15 Enhancement:
- When "target_port" is not empty, then mapped "target_port" to "target.port".
2024-01-25 Enhancement:
- Mapped "characterstic_of_app" to "security_result.summary".
- Mapped "pkts_received" to "network.received_packets".
- Mapped "pkts_sent" to "network.sent_bytes".
- Mapped "md5hash" to "principal.file.md5".
- Mapped "sha256hash" to "principal.file.sha256".
- Mapped "sha1hash" to "principal.file.sha1".
- Mapped "about_file_mime_type" to "principal.file.mime_type".
- Mapped "principal_ip" to "principal.asset.ip".
- Mapped "principal_ip1" to "principal.asset.ip".
- Mapped "principal_ip2" to "principal.asset.ip".
- Mapped "principal_ip3" to "principal.asset.ip".
- Mapped "principal_hostname" to "principal.asset.hostname".
- Mapped "target_ip" to "target.asset.ip".
- Mapped "target_ip1" to "target.asset.ip".
- Mapped "target_hostname" to "target.asset.hostname".
- Mapped "intermediary_hostname" to ""intermediary.asset.hostname".
- Mapped "category_of_app" to "security_result.category_details".
- Mapped "subcategory_of_app1" to "security_result.category_details".
- Mapped "subcategory_of_app" to "security_result.category_details".
2023-08-07 - Newly created parser.