fix(charts): update helm release velero to v7.2.1

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
velero (source)	patch	7.2.0 -> 7.2.1

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Release Notes

vmware-tanzu/helm-charts (velero)

### [`v7.2.1`](https://redirect.github.com/vmware-tanzu/helm-charts/releases/tag/velero-7.2.1) [Compare Source](https://redirect.github.com/vmware-tanzu/helm-charts/compare/velero-7.2.0...velero-7.2.1) A Helm chart for velero

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[github-actions[bot]]

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