I had earlier used the aws access key and secret for the AWSS3Source to authenticate which worked very well for me, however when I try to use the IAM role for authentication it gives me the following error:

AWSS3Source in version "v1alpha1" cannot be handled as a AWSS3Source: strict decoding error: unknown field "spec.auth.iamrole"

apiVersion: sources.triggermesh.io/v1alpha1
kind: AWSS3Source
metadata:
  name: s3data
spec:
  arn: arn:aws:s3:::xxxxx

  eventTypes:
  - s3:ObjectCreated:*
  - s3:ObjectRemoved:*

  auth:
    iamrole: arn:aws:iam::xxxxxxx:role/new-eks-service-role

  sink:
    ref:
      apiVersion: eventing.triggermesh.io/v1alpha1
      kind: RedisBroker
      name: myredis

Can anyone please suggest how can I overcome this ?