Add debug logs if kubergrunt cannot access Kubernetes cluster

**Describe the bug**
I recently used `kubergrunt eks deploy` to roll-out workers update and it suddenly failed at some point (see logs):
```
[] INFO[2023-02-10T12:57:02+01:00] Successfully launched new nodes with new launch config on ASG app-workers-eks-data-asg-20210305120833070500000007 name=kubergrunt
[] INFO[2023-02-10T12:57:02+01:00] Waiting for 3 nodes in Kubernetes to reach ready state name=kubergrunt
[] INFO[2023-02-10T12:57:02+01:00] Loading Kubernetes Client name=kubergrunt
[] INFO[2023-02-10T12:57:02+01:00] Using config on disk and context. name=kubergrunt
[] INFO[2023-02-10T12:57:02+01:00] Checking if nodes ready name=kubergrunt
[] ERRO[2023-02-10T12:57:04+01:00] Timed out waiting for the instances to reach ready state in Kubernetes. name=kubergrunt
[] ERRO[2023-02-10T12:57:04+01:00] Undo by terminating all the new instances and trying again name=kubergrunt
[] ERRO[2023-02-10T12:57:04+01:00] Error while waiting for new nodes to be ready. name=kubergrunt
[] ERRO[2023-02-10T12:57:04+01:00] Either resume with the recovery file or terminate the new instances. name=kubergrunt
```

The reason for this that my `kubectl` was not switched to correct context, basically, neither `kubectl` not `kubergrunt` cannot authenticate to the correct cluster. But, as you can see from logs, you cannot define that.

**To Reproduce**
Steps to reproduce the behavior including the relevant Terraform/Terragrunt/Packer version number and any code snippets and module inputs you used.

**Expected behavior**
Display meaningful errors if `kubergrunt` cannot authenticate to Kubernetes cluster.

**Nice to have**
- [ ] Terminal output
- [ ] Screenshots

**Additional context**
Add any other context about the problem here.

Start with the `kubergrunt eks deploy` command and reproduce the failure using an incorrect Kubernetes context. Trace the Kubernetes client and node-readiness path behind the timeout, then verify that authentication failures produce meaningful diagnostic output instead of only the generic timeout messages.

Written by the indexing model from the issue text.