Rename new session ticket name for TLS 1.3

NewSessionTicket is different with TLS 1.2.
It should not share same state.

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index 0372f2d..db8476c 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -2743,7 +2743,7 @@
 }
 
 /*
- * Handler for MBEDTLS_SSL_NEW_SESSION_TICKET
+ * Handler for MBEDTLS_SSL_TLS1_3_NEW_SESSION_TICKET
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
 static int ssl_tls13_process_new_session_ticket( mbedtls_ssl_context *ssl )
@@ -2857,7 +2857,7 @@
 #endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-        case MBEDTLS_SSL_NEW_SESSION_TICKET:
+        case MBEDTLS_SSL_TLS1_3_NEW_SESSION_TICKET:
             ret = ssl_tls13_process_new_session_ticket( ssl );
             if( ret != 0 )
                 break;