Reduce level of non-error debug message

Signed-off-by: Gilles Peskine <[email protected]>

library/ssl_msg.c

@@ -5066,7 +5066,7 @@ int mbedtls_ssl_handle_message_type(mbedtls_ssl_context *ssl)
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
         if (ssl->tls_version == MBEDTLS_SSL_VERSION_TLS1_3) {
-            MBEDTLS_SSL_DEBUG_MSG(1,
+            MBEDTLS_SSL_DEBUG_MSG(2,
                                   ("Ignore ChangeCipherSpec in TLS 1.3 compatibility mode"));
             return MBEDTLS_ERR_SSL_CONTINUE_PROCESSING;
         }