chore(deps): update dependency grafana to v10.4.0-0

requirements.yml

@@ -22,7 +22,7 @@
   version: v4.97-r0-0-1
   name: exim_relay
 - src: git+https://gitlab.com/etke.cc/roles/grafana.git
-  version: v10.3.1-2
+  version: v10.4.0-0
   name: grafana
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-jitsi.git
   version: v9258-0