chore: Replace deprecated k8s.io/utils/pointer with k8s.io/utils/ptr

[Zhupku]

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• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

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[linux-foundation-easycla]

• ✅login: ScottZhuMS / (6046abf)

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[andyzhangx]

/ok-to-test
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andyzhangx, Zhupku

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[andyzhangx]

/retest