Bump grafana image to 5.2.3 (#8346)
Bump grafana image to 5.2.3 (#8346)


smawson/istio,istio/istio,istio/istio,smawson/istio,geeknoid/istio,geeknoid/istio,geeknoid/istio,smawson/istio,geeknoid/istio,smawson/istio,smawson/istio,geeknoid/istio,smawson/istio,geeknoid/istio,istio/istio,istio/istio,istio/istio