Fix version of gwt-test-utils

The SNAPSHOT version 0.45 doesn't exist anymore on the
specified repository. Switch to snapshot version 0.46.

Because of this bug calling "tools/eclipse/project.py"
didn't work properly. You have to delete your
~/.gerritcodereview/buck-cache to see this problem.

Change-Id: Ie249d6aedf30e579c90f3f457807ff84a3bdb110
1 file changed