Update dependency k8s.gcr.io/sig-storage/csi-snapshotter to v6.0.1

This MR contains the following updates:

Package	Type	Update	Change
k8s.gcr.io/sig-storage/csi-snapshotter	ironbank-docker	patch	v6.0.0 -> v6.0.1
k8s.gcr.io/sig-storage/csi-snapshotter		patch	v6.0.0 -> v6.0.1
k8s.gcr.io/sig-storage/csi-snapshotter	stage	patch	v6.0.0 -> v6.0.1

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