ulab: update to 1.7.2

jepler · jepler · commit 689fba764a36 · 2021-01-29T09:45:00.000-06:00
Closes #4086
diff --git a/extmod/ulab b/extmod/ulab
@@ -1 +1 @@
-Subproject commit 8b804f3bcd8c5a3ac1b3e09e0ff7faf8270751de
+Subproject commit 743d86487c83e42024ed508ed50499ad0a527d5d
