test: change default node pool instance generation

[njtran]

Fixes #N/A

Description
Lower gen instance types are deprecated

How was this change tested?
testing here

Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: #
• No

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[njtran]

/karpenter snapshot

[netlify]

✅ Deploy Preview for karpenter-docs-prod canceled.

Name	Link
🔨 Latest commit	e9d882e
🔍 Latest deploy log	https://app.netlify.com/sites/karpenter-docs-prod/deploys/66df67ce3ef2fc0009df1f25

[github-actions]

Snapshot successfully published to oci://021119463062.dkr.ecr.us-east-1.amazonaws.com/karpenter/snapshot/karpenter:0-e9d882ecb3fcac70a11d0dbe0d5656551c11f28c.
To install you must login to the ECR repo with an AWS account:

aws ecr get-login-password --region us-east-1 | docker login --username AWS --password-stdin 021119463062.dkr.ecr.us-east-1.amazonaws.com

helm upgrade --install karpenter oci://021119463062.dkr.ecr.us-east-1.amazonaws.com/karpenter/snapshot/karpenter --version "0-e9d882ecb3fcac70a11d0dbe0d5656551c11f28c" --namespace "kube-system" --create-namespace \
  --set "settings.clusterName=${CLUSTER_NAME}" \
  --set "settings.interruptionQueue=${CLUSTER_NAME}" \
  --set controller.resources.requests.cpu=1 \
  --set controller.resources.requests.memory=1Gi \
  --set controller.resources.limits.cpu=1 \
  --set controller.resources.limits.memory=1Gi \
  --wait

[coveralls]

Pull Request Test Coverage Report for Build 10781535740

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.02%) to 83.04%

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Totals
Change from base Build 10780523034:	0.02%
Covered Lines:	5513
Relevant Lines:	6639

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💛 - Coveralls

[github-actions]

This PR has been inactive for 14 days. StaleBot will close this stale PR after 14 more days of inactivity.