Updates downloaders: 48ef3d0 Tails: no need to make hybrid image anymore

diff --git a/downloaders b/downloaders
index 57c69a703cf24beb10a82160f68e3b2d8f975c3a..48ef3d069478dab8438db608e2cb3ce10e37c232 160000 (submodule)
--- a/downloaders
+++ b/downloaders
@@ -1 +1 @@
-Subproject commit 57c69a703cf24beb10a82160f68e3b2d8f975c3a
+Subproject commit 48ef3d069478dab8438db608e2cb3ce10e37c232