v0.38.0

Add TF attribute member-clusters to available outputs @patrick-armitage (#118)

what

• Add member-clusters Terraform-exposed attribute to list of available outputs
• Tested and working against tag 0.37.0

why

• This output can be useful for automation (I have a use case in flight for work which depends on its availability)

references

• Terraform attribute API doc: https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/elasticache_replication_group#member_clusters