Update the library to version 6.12.4

diff --git a/lib b/lib
index b56d0b7e8cda9be5a08886c71ec68460569140bf..5bfb408b991028b28b411c28971831f59ece4684 160000 (submodule)
--- a/lib
+++ b/lib
@@ -1 +1 @@
-Subproject commit b56d0b7e8cda9be5a08886c71ec68460569140bf
+Subproject commit 5bfb408b991028b28b411c28971831f59ece4684