Updates the Math submodule to 123176d90e.

stan-buildbot · stan-buildbot · commit 3884f60c5426 · 2026-05-27T08:09:29.000-04:00
diff --git a/lib/stan_math b/lib/stan_math
@@ -1 +1 @@
-Subproject commit 1ddb7c08e60e16831a5623c8c47a450046b64c4b
+Subproject commit 123176d90e9615fe9ed503518ee9358f914a74d0
