Change log for SYMANTEC_DLP

Date Changes
2024-09-05 Enhancement:
- Added support to parse the new log format.
2024-06-17 Enhancement:
- Added support to parse the new format of field "recipients".
2024-06-14 Enhancement:
- Added support for CEF Logs.
2024-05-16 Enhancement:
- Mapped "dlp_type" to "security_result.detection_fields".
2024-04-26 Bug-Fix:
- Mapped "recipients" to "target.user.email_addresses".
2024-03-10 Enhancement:
- Added new Grok patterns to parse logs of new SYSLOG formats.
- Mapped "server" to "target.application".
- Mapped "url" to "target.url".
- Mapped "dataowner_mail" to "principal.user.email_addresses".
- Mapped "reported_on" and "monitor_name" to "additional.fields".
- Mapped "sender" to "network.email.from".
- Mapped "subject" to "network.email.subject".
2024-02-20 Enhancement:
- Mapped "blocked" to "security_result.action_details" and "security_result.action".
2024-01-12 Enhancement:
- Mapped "incident_id" and "DLP_EP_Incident_ID" to "security_result.detection_fields".
- Added a Grok pattern to parse logs of new SYSLOG formats.
- Mapped "location" to "principal.resource.attribute.labels".
- Mapped "target_type" to "target.resource.attribute.labels".
2023-12-06 Enhancement:
- Added a Grok pattern to parse logs of new formats.
- Mapped "application" to "principal.application".
- Mapped "application_name" to "target.application".
- Mapped "policy_name" to "security_result.detection_fields".
2023-09-02 Enhancement:
- Added support to parse failing logs and mapped the fields accordingly.
2023-08-17 Enhancement:
- Mapped "Occurred on" to "principal.labels".
- When "act" is "Modified", set "security_result.action" to "ALLOW_WITH_MODIFICATION".
- Mapped "status" to "principal.labels".