[Feature] Support upgrading managed Ubuntu nodegroups

[aciba90]

What feature/behavior/change do you want?

Managed Ubuntu nodegroups are not currently handled in eksctl upgrade nodegroup. Similar to #7821, upgrading Ubuntu AMI families should be supported.

Why do you want this feature?

Clients using managed Ubuntu nodegroups could upgrade the associated amis using auto-ssm resolution.

[github-actions]

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