Change log for AWS_SESSION_MANAGER

Date Changes
2025-04-30 Enhancement:
- event.idm.read_only_udm.metadata.product_version: Newly mapped eventVersion raw log field to event.idm.read_only_udm.metadata.product_version UDM field.
- event.idm.read_only_udm.principal.cloud.availability_zone: Newly mapped awsRegion raw log field to event.idm.read_only_udm.principal.cloud.availability_zone UDM field.
- event.idm.read_only_udm.target.resource.id: Newly mapped target.id raw log field to event.idm.read_only_udm.target.resource.id UDM field. Set event.idm.read_only_udm.target.resource.type to "instance".
- event.idm.read_only_udm.principal.user.product_object_id: Newly mapped userIdentity.arn raw log field to event.idm.read_only_udm.principal.user.product_object_id UDM field.
- event.idm.read_only_udm.principal.user.userid: Newly mapped runAsUser raw log field to event.idm.read_only_udm.principal.user.userid UDM field.
- event.idm.read_only_udm.network.session_id: Newly mapped sessionId raw log field to event.idm.read_only_udm.network.session_id UDM field.
- event.idm.read_only_udm.security_result.detection_fields: Newly mapped sessionData array to event.idm.read_only_udm.security_result.detection_fields UDM field, using index as key and the value of the array as value.
- JSON: Added support for parsing JSON format logs.
- Modified the grok patterns in order to parse the logs with json format, including handling of nested objects (target, userIdentity) and arrays (sessionData).
2023-06-14 Newly created parser.