Update grafana version to 9.3.16 (#2162)

* Update grafana version to 9.3.16

Address CVE-2023-3128

https://github.com/prometheus-operator/kube-prometheus/issues/2147

* regenerate YAML

manifests/grafana-dashboardSources.yaml

@@ -22,6 +22,6 @@ metadata:
     app.kubernetes.io/component: grafana
     app.kubernetes.io/name: grafana
     app.kubernetes.io/part-of: kube-prometheus
-    app.kubernetes.io/version: 9.3.2
+    app.kubernetes.io/version: 9.3.16
   name: grafana-dashboards
   namespace: monitoring