Add EC2 instance type p5.48xlarge

[ricardov1]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Enables the use of p5.48xlarge instances in node groups

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[gjtempleton]

Thanks, are you wanting to cherry-pick this any further back given the versions currently supported by EKS?
/approve
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: gjtempleton, ricardov1

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[ricardov1]

hey @gjtempleton, good point. yes that would make sense too. which versions would that be? I can't find any docs on the versions supported by EKS

[gjtempleton]

https://docs.aws.amazon.com/eks/latest/userguide/kubernetes-versions.html#kubernetes-release-calendar

[gjtempleton]

I wouldn't raise it as far back as 1.23 with it still being in extended support, I think we may only be cutting releases as far back as 1.25 this time round.

[ricardov1]

@gjtempleton awesome, thanks! I've opened PRs for 1.25, 1.26 and 1.27
#6286
#6287
#6285