Microsoft lists - Authenticate with service principal

[nbaju1]

Describe the bug
According to the docs, it should be possible to provide client ID and client secret as authentication credentials for the Microsoft lists connector. This does not seem to work as the connector in the UI still asks for user authorization to finish the setup of the connector.

To Reproduce

data "fivetran_group" "all_connectors" {
  id = "group"
}

resource "fivetran_connector" "microsoft_lists_connector" {
  group_id          = data.fivetran_group.all_connectors.id
  service           = "microsoft_lists"
  networking_method = "Directly"
  auth {
    client_id     = var.client_id
    client_secret = var.client_secret
  }
  config {
    site_name = "some-site"
  }
  destination_schema {
    name = "some_site"
  }
}

resource "fivetran_connector_schedule" "connector_schedule" {
  connector_id   = fivetran_connector.microsoft_lists_connector.id
  sync_frequency = "60"
}

Expected behavior
Connector using the provided client credentials to authenticate with Sharepoint.

Plugin version:
1.3.2