[BE]: Update mimalloc submodule to 2.3.0 (pytorch#180780)

Skylion007 · pytorchmergebot · commit 212111e9eef0 · 2026-04-27T07:07:51.000Z
Update mimalloc 2.3.0. It's most just bugfixes, concurrency improvements, and compiler fixes Pull Request resolved: pytorch#180780 Approved by: https://github.com/malfet
diff --git a/third_party/mimalloc b/third_party/mimalloc
@@ -1 +1 @@
-Subproject commit 048d969a1c5ee2fb89c226298f41ea38445546ef
+Subproject commit 5459bece783e4ff86ef4c54dbb3b0d7a142a07d9
