reproduce https://github.com/terraform-aws-modules/terraform-aws-eks/issues/1578

main.tf

terraform {
  required_providers {
    http = {
      source  = "terraform-aws-modules/http"
      version = "2.4.1"
    }
  }
  required_version = ">= 0.13"
}

data "http" "example" {
  url            = "https:// - snip - .eks.amazonaws.com/healthz"
  ca_certificate = base64decode(" - snip - ")

  lifecycle {
    ignore_changes = ["response_headers"]
  }
}

output "my_var" {
  depends_on = [data.http.example]
  value      = "anything"
}