Merge pull request #500 from lsst-it/renovate/velero-6.x

Update Helm release velero to v6.7.0

Author: jhoblitt

fleet/lib/velero/fleet.yaml

@@ -6,7 +6,7 @@ helm:
   chart: *name
   releaseName: *name
   repo: https://vmware-tanzu.github.io/helm-charts
-  version: 6.6.0
+  version: 6.7.0
   valuesFiles:
     - values.yaml
   timeoutSeconds: 300