minor change in librarian

diff --git a/lib/librarian b/lib/librarian
index 84b4629..0efff78 160000 (submodule)
--- a/lib/librarian
+++ b/lib/librarian
@@ -1 +1 @@
-Subproject commit 84b462901aece7eda7ef1704c748a5e5b4b3df26
+Subproject commit 0efff78112a63c9321b297ff9ff98a8861d3cdf6