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

Author: renovate[bot]

src/development/stack.yml

@@ -146,7 +146,7 @@ services:
         - traefik.http.routers.grafana_secure.rule=Host(`grafana.${STACK_DOMAIN}`)
         - traefik.http.routers.grafana_secure.tls.options=mintls13@file #DARGSTACK-REMOVE
         - traefik.http.services.grafana.loadbalancer.server.port=3000
-    image: grafana/grafana:11.6.1
+    image: grafana/grafana:12.0.0
     secrets:
       - postgres_db
       - postgres_role_service_grafana_password