chore(traefik): update to release candidate

Author: dargmuesli

src/development/stack.yml

@@ -395,7 +395,7 @@ services:
       placement:
         constraints:
           - node.role == manager
-    image: traefik:v3.3.5
+    image: traefik:v3.4.0-rc1
     ports: #DARGSTACK-REMOVE
       - mode: host #DARGSTACK-REMOVE
         protocol: tcp #DARGSTACK-REMOVE