Update Ironbank

This MR contains the following updates:

Package	Update	Change
registry1.dso.mil/ironbank/opensource/kubernetes/kubectl	patch	v1.28.4 -> v1.28.6
registry1.dso.mil/ironbank/opensource/velero/velero	patch	v1.12.2 -> v1.12.3
registry1.dso.mil/ironbank/opensource/velero/velero	patch	1.12.2 -> 1.12.3
registry1.dso.mil/ironbank/opensource/velero/velero-plugin-for-csi	patch	v0.6.2 -> v0.6.3
velero/velero-plugin-for-csi	patch	v0.6.2 -> v0.6.3
velero/velero-restore-helper	patch	v1.12.2 -> v1.12.3

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