Unable to use terraform version 13+.

Hey Ritchie, I was wondering if this repo was going to be updated to use a version of TF greater than 12. We're running into some issues with a C1 deployment using TF v12 and need to move to v13.3+. Showing the below in the versions file.

terraform { required_version = "~> 0.12.0"

required_providers { aws = "~> 2.0" null = "~> 2.0" } }