Update optional from master

boost-commitbot · boost-commitbot · commit 05ac69322c87 · 2023-11-09T00:00:31.000Z
diff --git a/libs/optional b/libs/optional
@@ -1 +1 @@
-Subproject commit 6266c39b8e648786a308982a55006e74886ee67d
+Subproject commit c60db27762ff9cc16529e069c3c15f2fa898f994
