Appco istio version update (#59)

Author: lscalabrini01

appco/fleet.yaml

@@ -2,7 +2,6 @@ defaultNamespace: istio-system
 helm:
   releaseName: rancher-istio
   chart: "oci://dp.apps.rancher.io/charts/istio"
-  version: "0.8.1"
   force: false
   timeoutSeconds: 0
   targetNamespace: istio-system