Update Helm release velero to v6

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
velero (source)	major	5.4.1 -> 6.0.0

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Release Notes

vmware-tanzu/helm-charts (velero)

### [`v6.0.0`](https://togithub.com/vmware-tanzu/helm-charts/releases/tag/velero-6.0.0) [Compare Source](https://togithub.com/vmware-tanzu/helm-charts/compare/velero-5.4.1...velero-6.0.0) A Helm chart for velero #### What's Changed - fix(velero): remove useless `nodeAgent.privileged` by [@​cwrau](https://togithub.com/cwrau) in [https://github.com/vmware-tanzu/helm-charts/pull/509](https://togithub.com/vmware-tanzu/helm-charts/pull/509) #### New Contributors - [@​cwrau](https://togithub.com/cwrau) made their first contribution in [https://github.com/vmware-tanzu/helm-charts/pull/509](https://togithub.com/vmware-tanzu/helm-charts/pull/509) **Full Changelog**: https://github.com/vmware-tanzu/helm-charts/compare/velero-5.4.1...velero-6.0.0

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