feat(helm)!: Update chart grafana to 12.1.2

Author: renovate[bot]

kubernetes/apps/monitoring/grafana/app/helm-release.yaml

@@ -8,7 +8,7 @@ spec:
   chart:
     spec:
       chart: grafana
-      version: 11.2.2
+      version: 12.1.2
       sourceRef:
         kind: HelmRepository
         name: grafana-charts