Roll Fuchsia SDK from 12.20230318.2.1 to 12.20230318.3.1

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/fuchsia-sdk-chromium-autoroll
Please CC chrome-fuchsia-gardener@grotations.appspotmail.com,cr-fuchsia@chromium.org on the revert to ensure that a human
is aware of the problem.

To file a bug in Chromium: https://bugs.chromium.org/p/chromium/issues/entry

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

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

Tbr: chrome-fuchsia-gardener@grotations.appspotmail.com
Disable-Retries: true
Change-Id: I2407eb9638a26c736506efb2412fa9295c5594b2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4351314
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1119081}

DEPS

@@ -331,7 +331,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Fuchsia sdk
   # and whatever else without interference from each other.
-  'fuchsia_version': 'version:12.20230318.2.1',
+  'fuchsia_version': 'version:12.20230318.3.1',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling google-toolbox-for-mac
   # and whatever else without interference from each other.