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

This MR contains the following updates:

Package	Update	Change	OpenSSF
external-snapshotter	patch	v6.3.3 -> v6.3.4

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Release Notes

kubernetes-csi/external-snapshotter (external-snapshotter)

v6.3.4

Compare Source

Overall Status

Volume snapshotting has been a GA feature since Kubernetes v1.20.

Supported CSI Spec Versions

1.0-1.8

Minimum Kubernetes version

1.20

Recommended Kubernetes version

1.24 (The Volume Populators feature with the new PVC dataSourceRef field moved to Beta in 1.24)

Container

docker pull registry.k8s.io/sig-storage/snapshot-controller:v6.3.4
docker pull registry.k8s.io/sig-storage/csi-snapshotter:v6.3.4
docker pull registry.k8s.io/sig-storage/snapshot-validation-webhook:v6.3.4

Full Changelog

https://github.com/kubernetes-csi/external-snapshotter/blob/v6.3.4/CHANGELOG/CHANGELOG-6.3.md

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