Remove Tflint

Removal of tflint

Terragrunt has been shipping with a version of tflint compiled into the binary to allow for more convenient usage without installing tflint directly. However due to the adoption of a BUSL license in tflint, the version included in Terragrunt was frozen.

The dependency on tflint is now fully removed from Terragrunt. If you want to call tflint using a before_hook using Terragrunt, you will have to have tflint installed locally to do so.

To reduce the burden of this breaking change, Terragrunt will continue to provide conveniences like automatically running tflint init on behalf of users, although it no longer ships with a compiled version of tflint in the terragrunt binary.

To learn more, read the documentation on the integration with tflint.