chore(deps): update dependency kubernetes-csi/external-snapshotter to v6.3.4

Author: renovate[bot]

k8s-manifests/apps/cluster-wide-apps/csi-snapshotter-crd/kustomization.yaml

@@ -3,4 +3,4 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
-  - github.com/kubernetes-csi/external-snapshotter/client/config/crd?ref=v6.2.2
+  - github.com/kubernetes-csi/external-snapshotter/client/config/crd?ref=v6.3.4

k8s-manifests/apps/cluster-wide-apps/csi-snapshotter/kustomization.yaml

@@ -4,4 +4,4 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 namespace: kube-system
 resources:
-  - github.com/kubernetes-csi/external-snapshotter/deploy/kubernetes/snapshot-controller?ref=v6.2.2
+  - github.com/kubernetes-csi/external-snapshotter/deploy/kubernetes/snapshot-controller?ref=v6.3.4