Updates the Math submodule to 42063be.

stan-buildbot · stan-buildbot · commit db9851c7969e · 2026-01-29T03:26:25.000-05:00
diff --git a/lib/stan_math b/lib/stan_math
@@ -1 +1 @@
-Subproject commit 5b7cef499a9163cf6a07433a837eca6ebad0be5b
+Subproject commit 42063be9833129cdf1d4b2299616ec8aba237d80
