nfs-csi needs to disable deploying snapshot CRDs

The latest nfs-csi v4.5.0 deploys the volume snapshot CRDs by default: https://github.com/kubernetes-csi/csi-driver-nfs/blob/master/charts/v4.5.0/csi-driver-nfs/values.yaml#L144-L145

We're not deploying this version yet (we're on v4.4.0), but deploying the CRDs will clash with the snapshot-controller chart.