chore(deps): update grafana/grafana docker tag to v12.3.1

Author: renovate[bot]

docker-compose.yml

@@ -183,7 +183,7 @@ services:
     restart: unless-stopped
 
   grafana:
-    image: grafana/grafana:${GRAFANA_VERSION:-12.2.1}
+    image: grafana/grafana:${GRAFANA_VERSION:-12.3.1}
     user: ":"
     ports:
       - ${MONITORING_IP_GRAFANA:-0.0.0.0}:${MONITORING_PORT_GRAFANA:-3000}:3000