Update tfenv tool

[kvendingoldo]

Hi. Great repo! I see that you use tfenv here:

https://github.com/trussworks/terraform-module-template/blob/4166b5be5f0cc1b19f68dd8177f5812edfd39bb3/README.md?plain=1#L61

I suggest you to switch to tenv: https://github.com/tofuutils/tenv:

• it is a successor of tofuenv and tfenv
• can manage versions of OpenTofu / Terraform / Terragrunt and Atmos
• does not require any dependencies like jq / bash / etc

[esacteksab]

Hey thanks for the recommendation. We'll check it out. Much appreciated!