Updates hydra: bf63896 Fix: sync-media: git-annex: disable automatic syncing of content

diff --git a/hydra b/hydra
index 8e531b59f9285104b29147136d388b70d657a64f..bf63896f46d700874fbc775e342cdda6eb337046 160000 (submodule)
--- a/hydra
+++ b/hydra
@@ -1 +1 @@
-Subproject commit 8e531b59f9285104b29147136d388b70d657a64f
+Subproject commit bf63896f46d700874fbc775e342cdda6eb337046