Roll Fuchsia SDK from 072566dd6618 to b70000e57fb5

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: Idb57ebf1ea2981b717cb9712ad86dda8c7ed0c3b
Reviewed-on: https://chromium-review.googlesource.com/c/1394797Reviewed-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@{#619734}

build/fuchsia/linux.sdk.sha1

-072566dd661883ce907cdbdbdc88c12521e622f6
\ No newline at end of file
+b70000e57fb5c6799740dd62149bbc415401495d
\ No newline at end of file

build/fuchsia/mac.sdk.sha1

-56990592edd6f4928ff1ba5a176669ed095ac358
\ No newline at end of file
+1587c7b87a57c49aa71c92e04fd7a884a7a8e1f5
\ No newline at end of file