Updates the Stan submodule to 5e5e5dc58.

stan-buildbot · stan-buildbot · commit 943c9c9a1d47 · 2025-12-18T11:35:35.000-05:00
diff --git a/StanHeaders/inst/include/upstream b/StanHeaders/inst/include/upstream
@@ -1 +1 @@
-Subproject commit df4273a110bacebe117aea3f4b7570df755e95cc
+Subproject commit 5e5e5dc5863148baccf581d8a8f6ab044eb33828
