Update to traefik v3

templates/traefik-cm.yml.j2

@@ -25,8 +25,6 @@ data:
               to: websecure
               scheme: https
               permanent: true
-    #    http3:
-    #      advertisedPort: 42
       websecure:
         address: ":8443"
         http:
@@ -107,9 +105,9 @@ data:
     ##      BackendName: keep
     ##      BackendURL: keep
     ##      FrontendName: keep
+{% if traefik_hub_token is defined or traefik_ondemand is defined %}
     experimental:
     #  kubernetesGateway: true
-      http3: true
 {% if traefik_hub_token is defined %}
       hub: true
 {% endif %}
@@ -119,3 +117,4 @@ data:
           moduleName: github.com/acouvreur/traefik-ondemand-plugin
           version: v1.2.0
 {% endif %}
+{% endif %}