[gnome-continuous] manifest: Upgrade libusb to 1.0.20

[Javier Jardón Cabezas <jjardon src gnome org>]

commit 203353f9a26e5c18bde315cc74256413dbc70688
Author: Javier Jardón <jjardon gnome org>
Date:   Thu Dec 10 15:24:27 2015 +0000

    manifest: Upgrade libusb to 1.0.20

 manifest.json |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/manifest.json b/manifest.json
index 9af6c84..8b56a2a 100644
--- a/manifest.json
+++ b/manifest.json
@@ -119,7 +119,7 @@
                {"src": "gnome:libgudev"},
 
                {"src": "git:https://github.com/libusb/libusb.git";,
-                "tag": "v1.0.19"},
+                "tag": "v1.0.20"},
 
                {"src": "git:git://github.com/gregkh/usbutils.git",
                 "patches": ["usbutils-autogen.patch"]},