Update Helm release grafana to v8.9.0 (#1180)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

clusters/cl01tl/monitoring/grafana/Chart.yaml

@@ -15,7 +15,7 @@ maintainers:
   - name: alexlebens
 dependencies:
   - name: grafana
-    version: 8.8.5
+    version: 8.9.0
     repository: https://grafana.github.io/helm-charts
 icon: https://raw.githubusercontent.com/walkxcode/dashboard-icons/main/png/grafana.png
 appVersion: 11.4.0