Update grafana/grafana Docker tag to v11

Author: renovate[bot]

docker-compose.yml

@@ -63,7 +63,7 @@ services:
     restart: always
 
   grafana:
-    image: grafana/grafana:10.1.0@sha256:047c1c5aa6fef257b6c2516f95c8fcd9f28707c201c6413dd78328b6cbedff6f
+    image: grafana/grafana:11.6.0@sha256:62d2b9d20a19714ebfe48d1bb405086081bc602aa053e28cf6d73c7537640dfb
     volumes:
       - grafana:/var/lib/grafana
       - ./config/grafana/dashboards/:/etc/grafana/dashboards/