Change log for GCP_IAM_ANALYSIS

Date Changes
2023-02-27 Bug-Fix:
- Removed mapping of field iamBinding.members to entity.user.group_identifiers.
2022-12-28 Enhancement:
- Mapped the field iamBinding.role to entity.user.attribute.role.name.
- Mapped the field iamBinding.members to entity.user.group_identifiers.
2022-07-27 Enhancement
- Removed the mapping for identity.product_object_id which was mapped to event.idm.entity.entity.user.userid.