Roll Fuchsia SDK from 9b65862bfc10 to bff6fe5e28d5

The AutoRoll server is located here: https://autoroll.skia.org/r/fuchsia-sdk-chromium-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


CQ_INCLUDE_TRYBOTS=luci.chromium.try:fuchsia-arm64-cast;luci.chromium.try:fuchsia-x64-cast
TBR=cr-fuchsia+bot@chromium.org

Change-Id: Id6b356bc7c9c616769bf2f930d438b1ee950f67d
Reviewed-on: https://chromium-review.googlesource.com/c/1350219Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#610729}

build/fuchsia/linux.sdk.sha1

-9b65862bfc102e5078ddc9c9acb440d537ad0acb
+bff6fe5e28d59bb99bad00f6c3d717b56e7d93e6
\ No newline at end of file

build/fuchsia/mac.sdk.sha1

-b1656b70748395e8817fe545ab1fc65232181b61
+76f2c22cd54f3530a5966ccec272b5258ac88f27
\ No newline at end of file