Change log for CLOUDFLARE_AUDIT

Date Changes
2023-11-27 Enhancement:
- Added a Grok pattern to match new log format.
- Mapped "ResourceID" to "target.resource.product_object_id".
- Mapped "metainfo_zone_name" to "principal.hostname".
- Mapped "metainfo_user_id" to "principal.user.userid".
- Mapped "metainfo_user_email" to "principal.user.email".
- Mapped "metainfo_user_tag" to "principal.user.product_object_id".
- Mapped "metainfo" fields to "security_result.detection_fields".
- Mapped "newvalue_session_id" to "network.session_id".
- Mapped "NewValue" to "security_result.detection_fields".
- Mapped "OldValue" to "security_result.detection_fields".
- If "ActorID" is present, set "metadata.event_type" to "USER_RESOURCE_ACCESS".
2023-07-09 New parser created.