Remove redis chart and add dragonflydb chart.

kubernetes/apps/observability/grafana/app/helmrelease.yaml

@@ -154,12 +154,6 @@ spec:
           gnetId: 1860
           revision: 33
           datasource: Prometheus
-        redis:
-          # renovate: depName="Redis Dashboard for Prometheus Redis Exporter 1.x"
-          gnetId: 763
-          revision: 6
-          datasource:
-            - { name: DS_PROMETHEUS, value: Prometheus }
         spegel:
           # renovate: depName="Spegel"
           gnetId: 18089
@@ -177,6 +171,10 @@ spec:
           gnetId: 7845
           revision: 4
           datasource: Prometheus
+        dragonflydb:
+          url: https://raw.githubusercontent.com/dragonflydb/dragonfly/main/tools/local/monitoring/grafana/provisioning/dashboards/dashboard.json
+          datasource:
+            - { name: DS_PROMETHEUS, value: Prometheus }
         cert-manager:
           url: https://raw.githubusercontent.com/monitoring-mixins/website/master/assets/cert-manager/dashboards/cert-manager.json
           datasource: Prometheus