Rename new_session_ticket state

Both client and server side use
`MBEDTLS_SSL_NEW_SESSION_TICKET` now

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 5e368a1..42653a3 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -2077,7 +2077,7 @@
 }
 
 /*
- * Handler for MBEDTLS_SSL_CLIENT_NEW_SESSION_TICKET
+ * Handler for MBEDTLS_SSL_NEW_SESSION_TICKET
  */
 static int ssl_tls13_process_new_session_ticket( mbedtls_ssl_context *ssl )
 {
@@ -2185,7 +2185,7 @@
 #endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-        case MBEDTLS_SSL_CLIENT_NEW_SESSION_TICKET:
+        case MBEDTLS_SSL_NEW_SESSION_TICKET:
             ret = ssl_tls13_process_new_session_ticket( ssl );
             if( ret != 0 )
                 break;