update librarian

diff --git a/lib/librarian b/lib/librarian
index 1423b7f..7dee009 160000 (submodule)
--- a/lib/librarian
+++ b/lib/librarian
@@ -1 +1 @@
-Subproject commit 1423b7f55cedaf4afdb0b8d6060e1ddae7b0c44a
+Subproject commit 7dee009f056f7d802ed487b9b77698d54309f4da