Updates hydra: a6ef76f Feat: provision: initial support for UEFI and SecureBoot

diff --git a/hydra b/hydra
index e5349fdb8e1d22bce8d7e6d6e2e39574b6085e05..a6ef76fd3ae81297dc453f106fbe4d826dec8fa5 160000 (submodule)
--- a/hydra
+++ b/hydra
@@ -1 +1 @@
-Subproject commit e5349fdb8e1d22bce8d7e6d6e2e39574b6085e05
+Subproject commit a6ef76fd3ae81297dc453f106fbe4d826dec8fa5