chore(deps): update grafana/grafana docker tag to v12.4.3

Author: renovate[bot]

monitoring/docker-compose.yml

@@ -12,7 +12,7 @@ services:
       - "host.docker.internal:host-gateway"
 
   grafana:
-    image: grafana/grafana:12.4.2
+    image: grafana/grafana:12.4.3
     depends_on:
       - prometheus
     ports: