update buildrump.sh for subr::stdlibs()

diff --git a/buildrump.sh b/buildrump.sh
index 0f76cf41e9cfdf932148faa2cea5ae3df752f569..f40d700fe1a4048ff8546f6db638e95a7bb5417a 160000 (submodule)
--- a/buildrump.sh
+++ b/buildrump.sh
@@ -1 +1 @@
-Subproject commit 0f76cf41e9cfdf932148faa2cea5ae3df752f569
+Subproject commit f40d700fe1a4048ff8546f6db638e95a7bb5417a