Fix the problem that TFMIGRATE_EXEC_PATH=terragrunt raise parse error.

[SuperHiroki]

I encountered the problem that TFMIGRATE_EXEC_PATH=terragrunt raised the following parse error.

~/TerraformMy$ (cd envs/messi/aws-ap-northeast-1 && TFMIGRATE_EXEC_PATH=terragrunt tfmigrate plan)
2025/03/06 16:03:41 [INFO] AWS Auth provider used: "EnvProvider"
2025/03/06 16:03:42 [INFO] [runner] unapplied migration files: [20250306145900_rename_test.hcl]
2025/03/06 16:03:42 [INFO] [runner] load migration file: tfmigrate/20250306145900_rename_test.hcl
2025/03/06 16:03:42 [INFO] [migrator] start state migrator plan
failed to parse terraform version: terragrunt version v0.73.11

But README.md said that you can use terragrunt by setting TFMIGRATE_EXEC_PATH=terragrunt.

So I fixed it.

FYI, terragrunt version output is a little bit different from terraform version.

$ terragrunt version
terragrunt version v0.73.11

$ terraform version
Terraform v1.11.0
on linux_amd64

Your version of Terraform is out of date! The latest version
is 1.11.1. You can update by downloading from https://www.terraform.io/downloads.html

[SuperHiroki]

I have built the code of this branch and it worked fine!!
I am now using that binary.

[minamijoyo]

@SuperHiroki Thank you for reporting the issue!

This appears to be due to the CLI redesign of Terragrunt v0.73.0. I've opened a new issue, #204. Please give your idea on how to use tfmigrate with Terragrunt v0.73.0+.