validate cover extension server-side

[redakcja.git] / lib / librarian

diff --git a/lib/librarian b/lib/librarian
index dc310dd..30a74b4 160000 (submodule)
--- a/lib/librarian
+++ b/lib/librarian
@@ -1 +1 @@
-Subproject commit dc310ddf91e20a927cd1fc1db72e1c8cd803756d
+Subproject commit 30a74b436b8a81adbdbeea5a9b2f99dfc2e4949f