Upgrade to a new, fixed version of Bazel

Change-Id: I90f63a9cb40bcfde7552a79355dfbf9123bcd798
diff --git a/aos/downloader/downloader.bzl b/aos/downloader/downloader.bzl
index 0085804..e5179c9 100644
--- a/aos/downloader/downloader.bzl
+++ b/aos/downloader/downloader.bzl
@@ -6,7 +6,7 @@
     content = '\n'.join([
       '#!/bin/bash',
       'set -e',
-      'cd "${BASH_SOURCE[@]}.runfiles"',
+      'cd "${BASH_SOURCE[@]}.runfiles/%s"' % ctx.workspace_name,
     ] + ['%s %s --dirs %s -- %s "$@"' % (
        ctx.executable._downloader.short_path,
        ' '.join([src.short_path for src in d.downloader_srcs]),