chore(deps): update helm release grafana to v12.4.8

Author: renovate[bot]

ops/Helm/addons/observability/grafana/Chart.lock

@@ -1,6 +1,6 @@
 dependencies:
 - name: grafana
   repository: https://grafana-community.github.io/helm-charts
-  version: 12.2.1
-digest: sha256:1c5ecd5489b7a510162edb4af81926d18677efa1b8d32030cc94f516023c38e6
-generated: "2026-04-29T02:36:30.570017752Z"
+  version: 12.4.8
+digest: sha256:54a7653b9ef2149564f6c787151e28bec488b4431642c2f0d7161862959fead1
+generated: "2026-06-18T01:01:33.430325045Z"

ops/Helm/addons/observability/grafana/Chart.yaml

@@ -14,7 +14,7 @@ type: application
 deprecated: false
 dependencies:
   - name: grafana
-    version: 12.2.1
+    version: 12.4.8
     repository: https://grafana-community.github.io/helm-charts
     condition: grafana.enabled
     tags: