chore: general house keeping, tflint, tfsort, update CI tools

[esacteksab]

• chore(deps): update things
• chore: tflint and tfsort variables
• docs: update readme

[esacteksab]

The biggest change was adding a type to var.container_volumes. I'm not entirely certain I captured it correctly. I referenced a config on an existing project:

efs_instance_id       = aws_efs_file_system.main.id
  container_volumes = [{
    "name" = var.efs.volume_name,
    "efs_volume_configuration" = {
      access_point_id         = aws_efs_access_point.mi_files.id,
      transit_encryption      = "ENABLED"
      transit_encryption_port = 10000
    }
  }]

I also replaced join("", object) with one(object), TF docs explains one(). Hopefully I did this correctly.