Updates for Karpenter v1

[askulkarni2]

Describe the problem

Topics like https://aws.github.io/aws-eks-best-practices/karpenter/ and https://aws.github.io/aws-eks-best-practices/cost_optimization/cost_opt_compute/#karpenter-consolidation should be updated with v1 related updates.

References
Please include a link to the lines where the error appears.

Also https://aws.github.io/aws-eks-best-practices/scalability/docs/control-plane/#remove-underutilized-nodes refers to ttlSecondsAfterEmpty which was replaced by consolidateAfter: https://karpenter.sh/v0.32/upgrading/v1beta1-migration/#ttlsecondsafterempty