Assigns or changes an Amazon Identity and Access Management (IAM) role to the managed instance.
ssm_update_managed_instance_role(InstanceId, IamRole)
[required] The ID of the managed instance where you want to update the role.
[required] The IAM role you want to assign or change.
svc$update_managed_instance_role( InstanceId = "string", IamRole = "string" )