[cipd] Bump client version.

Bump CIPD client version to:
c8044eb23015ef176913df6f4493c13f67e4d44b

BUG=None
TEST=staging
  - Deployed as staging on BuildBot instances.

Change-Id: I234fc7a16b0bb259e41d28c01a3a7d611d361f81
Reviewed-on: https://chromium-review.googlesource.com/707939Reviewed-by: Vadim Shtayura <vadimsh@chromium.org>
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Robbie Iannucci <iannucci@chromium.org>

cipd_client_version

-git_revision:0aa5e4d06ec4d3b90980fcb0d0b7c34a5e65b9e1
+git_revision:c8044eb23015ef176913df6f4493c13f67e4d44b