Fuchsia: roll Fuchsia SDK from 6e46feb -> 3da56ad

This roll incorporates a recent fix with the SDK blobstore FVM size.

(This remedies the roll in commit 4b825d77, which used a SDK hash
that was cut too soon.)

TBR=sergeyu

Bug: 707030
Change-Id: I14e3dc7e7db0e3c3e832a815f1e91e9c7315494a
Reviewed-on: https://chromium-review.googlesource.com/972446Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Kevin Marshall <kmarshall@chromium.org>
Commit-Queue: Kevin Marshall <kmarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#544787}

build/fuchsia/update_sdk.py

@@ -13,7 +13,7 @@ import sys
 import tarfile
 import tempfile
 
-SDK_HASH = '62b7da622853d3517d79ff76607522f7092989a6'
+SDK_HASH = '32a56ad54471732034ba802cbfc3c9ff277b9d1c'
 
 REPOSITORY_ROOT = os.path.abspath(os.path.join(
     os.path.dirname(__file__), '..', '..'))