Support creating IPv6 EKS clusters

[stevehipwell]

Is your request related to a new offering from AWS?

Yes. I doubt it's in the provider as the CLI arguments aren't even documented yet. But we should have an issue to track this.

Is your request related to a problem? Please describe.

I'd like to be able to create IPv6 enabled clusters as described in the AWS news announcement.

Describe the solution you'd like.

I'd like this option supported as soon as the provider exposes it.

Describe alternatives you've considered.

N/A

Additional context

N/A

[bryantbiggs]

upstream issue for tracking hashicorp/terraform-provider-aws#22407

[antonbabenko]

This issue has been resolved in version 18.1.0 🎉

[github-actions]

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