[Bug] `eksctl utils update-aws-node` downgraded aws-node significantly instead of upgrading it about eksctl

[github-actions]

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[consideRatio]

It seems like the version 1.12.6 is hardcoded, so it does update to the latest aws-node version provided by eksctl, but that is older than the version you get through the initial install - so updating leads to downgrading.

In #6692 I see how the hardcoded eksctl version has been updated historically.

For k8s 1.29, version 1.14.1+ is recommended via https://github.com/aws/amazon-vpc-cni-k8s?tab=readme-ov-file#recommended-version, so in practice what happens now is that we get downgraded below the recommended version.

/cc: @wind0r and @Himangini as the author and reviewer of #6692 helping this be updated historically.

[consideRatio]

I opened #7756 to do a one-time bump.

[cPu1]

Thanks for the detailed issue! In addition to your PR, we plan on improving this experience by always installing EKS managed addons by default when addons are not specified, instead of letting EKS install self-managed addons. This should eliminate the need to maintain manifests with hard-coded versions in eksctl, as users will update addons using eksctl update addon instead.

[consideRatio]

In addition to your PR, we plan on improving this experience by always installing EKS managed addons by default when addons are not specified, instead of letting EKS install self-managed addons.

Wiee that sounds great, thank you for your work on eksctl @cPu1 and @TiberiuGC!!