What feature/behavior/change do you want?

It would be great if eksctl fully supported AMIs with Amazon Linux 2023 to build node groups and managed node groups.

At the moment of writing they are not supported:
https://eksctl.io/usage/schema/

Why do you want this feature?

Amazon Linux 2023 is the successor of Amazon Linux 2. It is more and more commonly used in the AWS public cloud.

EKS support for Amazon Linux 2023 has been recently announced:
https://aws.amazon.com/about-aws/whats-new/2024/02/amazon-eks-support-linux-2023/