Update work challenge background image.

Updated so the orange briefcase in the image
isn't central so avoiding clashing with text.

Bug: 28557192
Change-Id: Ic8e4ea71f47449e81619b28b979f59c3d9aaf6a0
diff --git a/res/drawable-nodpi/work_challenge_background.png b/res/drawable-nodpi/work_challenge_background.png
index 50f0c76..311f30b 100644
--- a/res/drawable-nodpi/work_challenge_background.png
+++ b/res/drawable-nodpi/work_challenge_background.png
Binary files differ