Traefik 2.11 in docker-compose example (#6098)

https://github.com/traefik/traefik/releases/tag/v2.11.0

Docker/freshrss/docker-compose-proxy.yml

@@ -7,7 +7,7 @@ volumes:
 services:
 
   traefik:
-    image: traefik:2.10
+    image: traefik:2.11
     container_name: traefik
     restart: unless-stopped
     logging: