chore(deps): update helm release velero to 8.4.0

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gitops/argocd/charts/storage/velero/Chart.yaml

@@ -10,4 +10,4 @@ appVersion: 2.27.0
 dependencies:
 - name: velero
   repository: https://vmware-tanzu.github.io/helm-charts
-  version: 6.0.0
+  version: 8.4.0