extlib: update mimalloc to v2.2.3

iscgar · ruevs · commit b9a9e268a6e4 · 2025-08-10T22:41:24.000+03:00
This solves an issue with CMake 4.0.0, which doesn't support configs
for versions earlier than 3.5.
diff --git a/extlib/mimalloc b/extlib/mimalloc
@@ -1 +1 @@
-Subproject commit f819dbb4e4813fab464aee16770f39f11476bfea
+Subproject commit 94036de6fe20bfd8a73d4a6d142fcf532ea604d9
