chore(base-cluster/dependencies): update helm release velero to v7.1.5 (#1134)

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This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [velero](https://togithub.com/vmware-tanzu/velero)
([source](https://togithub.com/vmware-tanzu/helm-charts)) | patch |
`7.1.4` -> `7.1.5` |

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

---

### Release Notes

<details>
<summary>vmware-tanzu/helm-charts (velero)</summary>

###
[`v7.1.5`](https://togithub.com/vmware-tanzu/helm-charts/releases/tag/velero-7.1.5)

[Compare
Source](https://togithub.com/vmware-tanzu/helm-charts/compare/velero-7.1.4...velero-7.1.5)

A Helm chart for velero

#### What's Changed

- \[velero] Add example excluded-resources values by
[@&#8203;younsl](https://togithub.com/younsl) in
[https://github.com/vmware-tanzu/helm-charts/pull/611](https://togithub.com/vmware-tanzu/helm-charts/pull/611)

#### New Contributors

- [@&#8203;younsl](https://togithub.com/younsl) made their first
contribution in
[https://github.com/vmware-tanzu/helm-charts/pull/611](https://togithub.com/vmware-tanzu/helm-charts/pull/611)

**Full Changelog**:
vmware-tanzu/helm-charts@velero-7.1.4...velero-7.1.5

</details>

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charts/base-cluster/values.yaml

@@ -169,7 +169,7 @@ global:
     vmware:
       url: https://vmware-tanzu.github.io/helm-charts
       charts:
-        velero: 7.1.4
+        velero: 7.1.5
       condition: "{{ not (empty .Values.backup.backupStorageLocations) }}"
     open-telemetry:
       url: https://open-telemetry.github.io/opentelemetry-helm-charts