constants: update skylab package pin

Specifically this will bring in https://crrev.com/c/2523676,
which brings skylab over to the newer CTP API. There is no side effect
on cbuildbot code, as the inputs and outputs from the skylab CLI tool
are unaffected.

BUG=chromium:1040689
TEST=local runs with skylab CLI

Change-Id: I389250d23b1872dceade1abc65b0aa21a12f9eb6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2528202
Reviewed-by: Dhanya Ganesh <dhanyaganesh@chromium.org>
Commit-Queue: Sean Abraham <seanabraham@chromium.org>
Tested-by: Sean Abraham <seanabraham@chromium.org>
(cherry picked from commit 9d459255297ac0d495aea1b042ea348f593d0493)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2533078
Reviewed-by: Jared Loucks <jaredloucks@google.com>
(cherry picked from commit 6c019ea7bfa1f97c5c2924ccf23153e0a6732b06)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2534878
Reviewed-by: Sean Abraham <seanabraham@chromium.org>
Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
Commit-Queue: Jana Grill <janagrill@chromium.org>
diff --git a/lib/constants.py b/lib/constants.py
index 2c6386a..a5aa0a3 100644
--- a/lib/constants.py
+++ b/lib/constants.py
@@ -638,7 +638,7 @@
 # crbug.com/1108489: The skylab tool CIPD package is pinned to a specific
 # version to avoid uncontrolled tool release and so that the tool is effectively
 # branched with cbuildbot.
-CIPD_SKYLAB_INSTANCE_ID = 'iYtu-iue_-h4VojzyfDlZDoai95oTZnemPNPi_lfqQ0C'
+CIPD_SKYLAB_INSTANCE_ID = 'rfAczIAWe-S_ySaRTGXRHxo1aN_4oNzUIoD9-w886cYC'
 
 # HWTest result statuses
 HWTEST_STATUS_PASS = 'pass'