fix: update fluxcd grafana dashboard URLs

Signed-off-by: Devin Buhl <devin@buhl.casa>

bootstrap/templates/addons/grafana/app/helmrelease.yaml.j2

@@ -109,10 +109,10 @@ spec:
           datasource: Prometheus
       flux:
         flux-cluster:
-          url: https://raw.githubusercontent.com/fluxcd/flux2/main/manifests/monitoring/monitoring-config/dashboards/cluster.json
+          url: https://raw.githubusercontent.com/fluxcd/flux2-monitoring-example/main/monitoring/configs/dashboards/cluster.json
           datasource: Prometheus
         flux-control-plane:
-          url: https://raw.githubusercontent.com/fluxcd/flux2/main/manifests/monitoring/monitoring-config/dashboards/control-plane.json
+          url: https://raw.githubusercontent.com/fluxcd/flux2-monitoring-example/main/monitoring/configs/dashboards/control-plane.json
           datasource: Prometheus
       kubernetes:
         kubernetes-api-server: