feat(helm): update chart grafana to 10.4.3

Author: renovate[bot]

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

@@ -12,7 +12,7 @@ spec:
         kind: HelmRepository
         name: grafana-charts
         namespace: flux-system
-      version: 10.1.4
+      version: 10.4.3
   interval: 60m
   timeout: 20m
   maxHistory: 2