update incubator chart url in aether helm charts

Change-Id: Id289b1bbe12ca4c1a190cd19f7fc16db4f29eceb
diff --git a/monitoring/grafana-aether/Chart.yaml b/monitoring/grafana-aether/Chart.yaml
index a7446f4..080b8ff 100644
--- a/monitoring/grafana-aether/Chart.yaml
+++ b/monitoring/grafana-aether/Chart.yaml
@@ -5,6 +5,6 @@
 name: grafana-aether
 description: A Helm chart for deploying Grafana with Aether dashboards
 
-version: 0.4.4
+version: 0.4.5
 
 appVersion: 0.1.0
diff --git a/monitoring/grafana-aether/requirements.yaml b/monitoring/grafana-aether/requirements.yaml
index e10bc60..297a8f7 100644
--- a/monitoring/grafana-aether/requirements.yaml
+++ b/monitoring/grafana-aether/requirements.yaml
@@ -4,5 +4,5 @@
 dependencies:
   - name: grafana
     version: 5.5.0
-    repository: https://kubernetes-charts.storage.googleapis.com/
+    repository: https://charts.helm.sh/stable
     condition: grafana.enabled