fix: Upgrade K8s auth API due to deprecation

[bryantbiggs]

What does this PR do?

• Upgrade K8s auth API version from v1alpha1 to v1beta1 in examples exec blocks. The guidance for users from the issues referenced below is:
  • Update your awscli to at least 2.7x
  • You may need to remove your kubeconfig locally and re-run aws eks update-kubeconfig --name ... to update the auth version used in your local kubeconfig
• Update CI workflow actions provide by GitHub to latest which use Node16

Motivation

• Terratest is currently failing with the following error:

TestEksBlueprintsE2E 2022-06-17T19:55:26Z logger.go:66: Error: Kubernetes cluster unreachable: exec plugin: invalid apiVersion "client.authentication.k8s.io/v1alpha1"

• References
  • Deprecate Kubernetes client API version v1alpha1 aws/aws-cli#6476
    • aws eks update-kubeconfig invalid apiVersion aws/aws-cli#6920
    • aws eks update-kubeconfig invalid apiVersion while using Github linux runners aws/aws-cli#6921

More

• Yes, I have tested the PR using my local account setup (Provide any test evidence report under Additional Notes)
• Yes, I have added a new example under examples to support my PR
• Yes, I have created another PR for add-ons under add-ons repo (if applicable)
• Yes, I have updated the docs for this feature
• Yes, I ran pre-commit run -a with this PR

Note: Not all the PRs required examples and docs except a new pattern or add-on added.

For Moderators

• E2E Test successfully complete before merge?

Additional Notes

[bryantbiggs]

why change from PR to push - glad you asked!

If you add new docs and new link, your PR will fail - see #407

The link won't be live and available to test properly until after merging and the GH pages are live. We also might want to bake this into the gh-page deploy pipeline and add a badge or something to ensure links are all good on main

[bryantbiggs]

this jives with the findings - looks like GitHub updated the runners to use the latest awscli which means the aws eks update-kubeconfig --name ... is going to pull v1beta1

aws-cli/2.7.7 Python/3.9.11 Linux/5.13.0-1029-azure exe/x86_64.ubuntu.20 prompt/off

Ref: https://github.com/aws-ia/terraform-aws-eks-blueprints/runs/6942642586?check_suite_focus=true

[Zvikan]

Should keep an eye post merge to see if this is causing issues as now users will need to upgrade to AWS CLI version >=2.7.X
Ideally we should encourage using non-deprecated api versions whenever possible.
LGTM.