Antctl doesn't work on EKS clusters

[luolanzone]

Describe the bug
I tried a few antctl commands on a EKS cluster, it seems it doesn't work as we expected and get below errors:

Error: failed to create rest client: exec plugin: invalid apiVersion "client.authentication.k8s.io/v1alpha1"

Here are a few commands I tried, there should be a problem to initialize the rest client correctly due to unexpected API version.

$antctl version
antctlVersion: v1.8.0
Error: failed to create rest client: exec plugin: invalid apiVersion "client.authentication.k8s.io/v1alpha1"
...
$antctl get networkpolicy
Error: failed to create rest client: exec plugin: invalid apiVersion "client.authentication.k8s.io/v1alpha1"

To Reproduce
Run antctl version with a EKS cluster kubeconfig file.

Expected
Antctl should work correctly on EKS clusters.

Actual behavior
Antctl doesn't work on EKS clusters.

Versions:
The version I tried is v1.8.0
But this issue probably also exists on early version.

Additional context

[luolanzone]

It turns out that 'client.authentication.k8s.io/v1alpha1' is deprecated but it's still used by old aws-cli. User need to make sure aws-cli version has this fix: aws/aws-cli#6476.
I followed this guide https://docs.aws.amazon.com/cli/latest/userguide/getting-started-install.html to deploy latest v2 aws-cli and regenerated the kubeconfig file via aws eks --region $region update-kubeconfig --name $cluster-name --kubeconfig $file-name. Antclt works file with new generated kubeconfig file.