Enable TLS 1.3 ticket handling in resumption tests

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/src/test_helpers/ssl_helpers.c b/tests/src/test_helpers/ssl_helpers.c
index f546e76..7d5d889 100644
--- a/tests/src/test_helpers/ssl_helpers.c
+++ b/tests/src/test_helpers/ssl_helpers.c
@@ -2543,6 +2543,9 @@
                                          server_options, NULL, NULL, NULL);
     TEST_EQUAL(ret, 0);
 
+    mbedtls_ssl_conf_enable_new_session_tickets(
+        &client_ep.conf, MBEDTLS_SSL_ENABLE_NEW_SESSION_TICKETS_ENABLED);
+
     mbedtls_ssl_conf_session_tickets_cb(&server_ep.conf,
                                         mbedtls_test_ticket_write,
                                         mbedtls_test_ticket_parse,