Change log for WORKDAY_AUDIT

Date Changes
2025-07-28 Enhancement:
- Added grok patterns to parse unparsed logs.
- event.idm.read_only_udm.network.session_id: Newly mapped `sessionid` raw log field with `event.idm.read_only_udm.network.session_id`.
- event.idm.read_only_udm.principal.ip: Newly mapped `src_ip` raw log field with `event.idm.read_only_udm.principal.ip`.
- event.idm.read_only_udm.principal.asset.ip: Newly mapped `src_ip` raw log field with `event.idm.read_only_udm.principal.asset.ip`.
- Removed redundant mapping of `event.idm.read_only_udm.target.asset.hostname`.
- event.idm.read_only_udm.network.http.response_code: Newly mapped `status_code` raw log field with `event.idm.read_only_udm.network.http.response_code`.
- event.idm.read_only_udm.metadata.event_type: Set `event.idm.read_only_udm.metadata.event_type` to "STATUS_UPDATE" if src_ip is not empty.
- event.idm.read_only_udm.metadata.event_type: Set `event.idm.read_only_udm.metadata.event_type` to "USER_UNCATEGORIZED" if primaryName is not empty.
- event.idm.read_only_udm.additional.fields: Newly mapped `context`, `devicetype`, `browser`, `authmethod` raw log fields with `event.idm.read_only_udm.additional.fields`.
- event.idm.read_only_udm.metadata.event_timestamp: Newly mapped `date` raw log fields with `event.idm.read_only_udm.metadata.event_timestamp`.
2025-01-30 Enhancement:
- "about_*" fields are changed to avoid duplicate fields.
- Removed the field "ClassOfInstance" field from "column8".
- Mapped "column11" to "SecurityGroupModified".
- Mapped "SecurityGroupModified" to "security_result.about.group.group_display_name".
- Removed the field "ChangedRelationship" from "target.user.attributes.roles.name".
- Removed the field "target.resource.attribute.labels.key/value" from "InstancesRemoved".
2024-11-06 Enhancement:
- Mapped "ClassOfInstance" to "metadata.description".
- Mapped "ChangedRelationship" to "target.user.attribute.roles.name".
- Mapped "InstancesRemoved" to "target.resource.attribute.labels".
2024-10-04 Enhancement:
- Modified the Grok patterns to parse the fields correctly.
2023-12-08 Newly created parser.
2023-12-08 Newly created parser.