chore(deps): update helm release grafana to v11.6.0

Author: github-actions[bot]

charts/grafana/values.yaml

@@ -113,7 +113,7 @@ grafana:
 
 grafanaChart:
   # renovate: datasource=helm depName=grafana registryUrl=https://grafana-community.github.io/helm-charts
-  version: 11.5.0
+  version: 11.6.0
   # Helm release name for Grafana
   releaseName: gf