Update traefik Docker tag to v3.1.6 (#679)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

services/reverse-proxy/docker-compose.traefik.yml

@@ -2,7 +2,7 @@ version: '3'
 
 services:
   traefik:
-    image: traefik:v3.1.5
+    image: traefik:v3.1.6
     container_name: traefik
     restart: unless-stopped
     healthcheck: