Update m6c commit

manishvenu · manishvenu · commit fedd68b71710 · 2025-10-10T13:35:47.000-06:00
diff --git a/external/mom6_bathy b/external/mom6_bathy
@@ -1 +1 @@
-Subproject commit a1bd00bda3c161279906aa25d0ee44ddd7103bb7
+Subproject commit 21743894c5e10f49951e9588ec96ac43b29a9122
