Updates hydra: 54c1158 Fix: chown invocations

diff --git a/hydra b/hydra
index 2368822db564cd0b71276f9af4741a7ad06fc55c..54c1158aff8b987dea88b35597047fafe92cd0a7 160000 (submodule)
--- a/hydra
+++ b/hydra
@@ -1 +1 @@
-Subproject commit 2368822db564cd0b71276f9af4741a7ad06fc55c
+Subproject commit 54c1158aff8b987dea88b35597047fafe92cd0a7