chore(deps): update docker.io/library/traefik docker tag to v3.5.6

library/compose/traefik/compose.yaml.j2

@@ -1,6 +1,6 @@
 services:
   {{ service_name }}:
-    image: docker.io/library/traefik:v3.5.4
+    image: docker.io/library/traefik:v3.5.6
     {% if not swarm_enabled %}
     container_name: {{ container_name }}
     security_opt: