add app_v3 to mercure cors

docker/mercure/caddy/Caddyfile

@@ -17,7 +17,7 @@ route {
         transport_url bolt:///var/run/mercure.db?size=100&cleanup_frequency=0.4
         publisher_jwt {env.MERCURE_PUBLISHER_JWT_KEY} HS256
         subscriber_jwt {env.MERCURE_SUBSCRIBER_JWT_KEY} HS256
-        cors_origins https://local.ap2i.opentalent.fr http://ap2i https://local.app.opentalent.fr http://app
+        cors_origins https://local.ap2i.opentalent.fr http://ap2i https://local.app.opentalent.fr http://app https://local.app-v3.opentalent.fr http://app-v3
         publish_origins https://local.ap2i.opentalent.fr http://ap2i https://local.mercure.opentalent.fr
         demo   # remove in prod
         subscriptions