fix(helm): update chart grafana to 6.52.2

| datasource | package | from   | to     |
| ---------- | ------- | ------ | ------ |
| helm       | grafana | 6.52.1 | 6.52.2 |

Signed-off-by: Jarvis Plus Bot <112913195+jarvis-plus-bot[bot]@users.noreply.github.com>

k8s/namespaces/base/observability/grafana/app/helmrelease.yaml

@@ -9,7 +9,7 @@ spec:
   chart:
     spec:
       chart: grafana
-      version: 6.52.1
+      version: 6.52.2
       sourceRef:
         kind: HelmRepository
         name: grafana-charts