Update support lib to 23.2.1

Update was done via android manager.

BUG=NONE

Change-Id: Ib8bfe153cabc9052bfb996660952bdeacbc5d407
Reviewed-on: https://chromium-review.googlesource.com/333700
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Tested-by: Ross McIlroy <rmcilroy@chromium.org>