Update registry.redhat.io/ubi8/ubi-minimal Docker digest to c12e67a #202

Job	Run time
Publish Image (kubectl-delivery, build/images/kubectl-delivery/Dockerfile, linux/amd64,linux/arm6... / Publish Image	3m 1s
Publish Image (storage-initializer, sdk/python/kubeflow/storage_initializer/Dockerfile, sdk/pytho... / Publish Image	11m 51s
Publish Image (trainer-huggingface, sdk/python/kubeflow/trainer/Dockerfile, sdk/python/kubeflow/t... / Publish Image	8m 8s
Publish Image (training-operator, build/images/training-operator/Dockerfile, linux/amd64,linux/ar... / Publish Image	25m 15s
	48m 15s

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