Make terraform scripts work on MacOS (i.e. darwin_arm64)

[araghukas]

The /hashicorp/template provider is not compatible with the darwin_arm64 platform.

╷
│ Error: Incompatible provider version
│
│ Provider registry.terraform.io/hashicorp/template v2.2.0 does not have a package available for your current platform, darwin_arm64.
│
│ Provider releases are separate from Terraform CLI releases, so not all providers are available for all platforms. Other versions of this provider may have different platforms supported.
╵

The template_file data source could be swapped with a templatefile function call to resolve this.

[kessler-frost]

This might also help: https://sharepointdevelopmentblog.wordpress.com/2023/02/07/terraform-template-v2-2-0-does-not-have-a-package-available-mac-m1/