Updates the Stan submodule to 1110753f4.

stan-buildbot · stan-buildbot · commit 640b12dd75a6 · 2025-06-06T04:56:17.000-04:00
diff --git a/StanHeaders/inst/include/upstream b/StanHeaders/inst/include/upstream
@@ -1 +1 @@
-Subproject commit 3d0eb7971937b461b73d4e9d0eda5c493a5dde20
+Subproject commit 1110753f450dc729808c0772bf32fe727cc54575
