Updates the Math submodule to 1187719b56.

stan-buildbot · stan-buildbot · commit a6c1286cb09c · 2025-08-12T09:44:50.000-04:00
diff --git a/lib/stan_math b/lib/stan_math
@@ -1 +1 @@
-Subproject commit 0c13850f5b8d853491d8bdfc85465ca7e500d432
+Subproject commit 1187719b561b83449b26394375a98d725ad7eefc
