Roll Fuchsia SDK from a57be877c506 to 959c11146fd1

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

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_audio;luci.chromium.try:fuchsia_x64_cast_audio
TBR=cr-fuchsia+bot@chromium.org

Change-Id: Ib4acfae0eb7bce7aaaa32bbb8f487e8d177a251b
Reviewed-on: https://chromium-review.googlesource.com/1121973Reviewed-by: Fuchsia SDK Autoroller <fuchsia-sdk-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: Fuchsia SDK Autoroller <fuchsia-sdk-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#571845}

build/fuchsia/sdk.sha1

-a57be877c50655c6c0fa2d29735d32e5fd801215
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+959c11146fd1d6e3eb747ba9b6bd87927364fa74
\ No newline at end of file