Update tfenv tool

[kvendingoldo]

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

https://github.com/marcincuber/dotfiles/blob/2b4123ea0db91916711a0ca1a63aebfcfeafaa78/brew.sh#L36

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