regenerate the ec2 instance types using latest metadata to fetch m7g/r7g instances

[a7i]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

AWs announced m7g instance types yesterday
https://aws.amazon.com/about-aws/whats-new/2023/02/amazon-ec2-m7g-r7g-instances/

Does this PR introduce a user-facing change?

support new ec2 instance types: m7g/r7g

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

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[mwielgus]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: a7i, mwielgus

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