chore(deps): update kubeflow-pipelines (major)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
gcr.io/ml-pipeline/api-server	Kustomization	major	1.6.0 -> 2.0.0
gcr.io/ml-pipeline/cache-deployer	Kustomization	major	1.6.0 -> 2.0.0
gcr.io/ml-pipeline/cache-server	Kustomization	major	1.6.0 -> 2.0.0
gcr.io/ml-pipeline/frontend	Kustomization	major	1.6.0 -> 2.0.0
gcr.io/ml-pipeline/metadata-envoy	Kustomization	major	1.6.0 -> 2.0.0
gcr.io/ml-pipeline/metadata-writer	Kustomization	major	1.6.0 -> 2.0.0
gcr.io/ml-pipeline/mysql	Kustomization	major	5.7 -> 8.0
gcr.io/ml-pipeline/persistenceagent	Kustomization	major	1.6.0 -> 2.0.0
gcr.io/ml-pipeline/scheduledworkflow	Kustomization	major	1.6.0 -> 2.0.0
gcr.io/ml-pipeline/viewer-crd-controller	Kustomization	major	1.6.0 -> 2.0.0
gcr.io/ml-pipeline/visualization-server	Kustomization	major	1.6.0 -> 2.0.0
gcr.io/ml-pipeline/workflow-controller	Kustomization	major	v2.12.9-license-compliance -> v3.4.7-license-compliance
gcr.io/tfx-oss-public/ml_metadata_store_server	Kustomization	major	0.30.0 -> 1.13.1

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