Resolved: Is it possible to insert a value into a file before it gets used in a terraform resource?

resource "aws_connect_contact_flow" "general" {
    instance_id = aws_connect_instance.dev.id
    name        = "General"
    description = "General Flow routing customers to queues"
    filename     = "flows/contact_flow.json"
    content_hash = filebase64sha256("flows/contact_flow.json")
}

"parameters":[
   {
          "name":"FunctionArn",
          "value":"<lambda function arn>",
          "namespace":null
    },
    {
          "name":"TimeLimit",
          "value":"3"
    }
],

</snip>

data.terraform_remote_state.remote.outputs.lambda_arn

"parameters":[
   {
          "name":"FunctionArn",
          "value":"$arn",
          "namespace":null
    },
    {
          "name":"TimeLimit",
          "value":"3"
    }
],

locals {

  contact_flow = templatefile("flows/contact_flow.json", {
                   arn = data.terraform_remote_state.remote.outputs.lambda_arn
                 })
}


resource "aws_connect_contact_flow" "general" {
    instance_id = aws_connect_instance.dev.id
    name        = "General"
    description = "General Flow routing customers to queues"
    content     = local.contact_flow
}