Update next.md

Author: sylvestre

next.md

@@ -54,5 +54,6 @@ This file documents the pending improvements or regression:
 * https://github.com/uutils/coreutils/pull/7178
 * https://github.com/uutils/coreutils/pull/7169
 * https://github.com/uutils/coreutils/pull/7192
+* https://github.com/uutils/coreutils/pull/7129