chore(deps): update helm release grafana to v5.8.16

Author: renovate[bot]

charts/temporal/Chart.yaml

@@ -34,7 +34,7 @@ dependencies:
     condition: elasticsearch.enabled
   - name: grafana
     repository: https://grafana.github.io/helm-charts
-    version: 5.0.10
+    version: 5.8.16
     condition: grafana.enabled
 
 # A chart can be either an 'application' or a 'library' chart.