Update CHANGELOG.md

[IronPan]

/assign @numerology

---

This change is 

[IronPan]

/approve

[numerology]

/lgtm

[IronPan]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: IronPan

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[k8s-ci-robot]

@IronPan: The following test failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
kubeflow-pipeline-e2e-test	79a0439	link	/test kubeflow-pipeline-e2e-test

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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