Unable to determine version for terraform v0.12.31

Nobody has claimed this yet.

I know this is an old version of Terraform but it does block using `tflocal` with the Terraform version I have to use - if there are other issues with older versions of Terraform maybe it's worth documenting a minimum version.

### Description
```
$ tfenv use 1.9.8
Switching default version to v1.9.8
Default version (when not overridden by .terraform-version or TFENV_TERRAFORM_VERSION) is now: 1.9.8
$ tflocal
Usage: terraform [global options] [args]
...

$ tfenv use 0.12.31
Switching default version to v0.12.31
Default version (when not overridden by .terraform-version or TFENV_TERRAFORM_VERSION) is now: 0.12.31
$ tflocal
Unable to determine version. See error message for details: Expecting value: line 1 column 1 (char 0)
```

It looks like it's because the version is parsed from `terraform version -json` [here](https://github.com/localstack/terraform-local/blob/main/bin/tflocal#L467), but it doesn't work for `v0.12.31`:
```
$ tfenv use 1.9.8
Switching default version to v1.9.8
Default version (when not overridden by .terraform-version or TFENV_TERRAFORM_VERSION) is now: 1.9.8
$ terraform version -json
{
"terraform_version": "1.9.8",
"platform": "darwin_arm64",
"provider_selections": {},
"terraform_outdated": false
}

$ tfenv use 0.12.31
Switching default version to v0.12.31
Default version (when not overridden by .terraform-version or TFENV_TERRAFORM_VERSION) is now: 0.12.31
$ terraform version -json
Terraform v0.12.31

Your version of Terraform is out of date! The latest version
is 1.9.8. You can update by downloading from https://www.terraform.io/downloads.html
```

Start with bin/tflocal around line 467 and reproduce the reported difference between Terraform 1.9.8 and v0.12.31 using `terraform version -json`. Check how the version output is parsed, then verify the expected behavior for the older release or document the minimum supported Terraform version; done means the limitation or compatibility behavior is clear and tested.

Written by the indexing model from the issue text.