Updates the Math submodule to a6932f2.

stan-buildbot · stan-buildbot · commit 8bef2916f30c · 2026-01-06T09:01:02.000-05:00
diff --git a/lib/stan_math b/lib/stan_math
@@ -1 +1 @@
-Subproject commit 5df6fc50b02b07109e21134448d1b7f5b2c38444
+Subproject commit a6932f2a8ff8d1800c7020d29593b5934a20e40b
