picolibc: Update to include upstream Zephyr 3.7 compat patch

keith-packard · stephanosio · commit c90b809eda9a · 2024-10-05T18:35:41.000+09:00
Picolibc has a version of the Zephyr 3.7 compat patch upstream. Use
that instead of an out-of-tree version.

Signed-off-by: Keith Packard &lt;keithp@keithp.com&gt;
diff --git a/picolibc b/picolibc
@@ -1 +1 @@
-Subproject commit 87e27996304b79e4ea3d18db7c996768e749b0be
+Subproject commit 21d8fed73c34bfaf406ebedab2db46474baa1f20
