Roll src/fuchsia/sdk/mac from gOhJW... to Vepm4...

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/fuchsia-mac-sdk-flutter-engine
Please CC jimgraham@google.com on the revert to ensure that a human
is aware of the problem.

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https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

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

DEPS

@@ -549,7 +549,7 @@ deps = {
      'packages': [
        {
         'package': 'fuchsia/sdk/core/mac-amd64',
-        'version': 'gOhJW8yp04HdyjsoNcly5DJAfR6eCx5YgsSDeBXvYnMC'
+        'version': 'Vepm4ySFVnLjjMIU9N3KV0PndbZqTfC-MMwqCziH-jwC'
        }
      ],
      'condition': 'host_os == "mac"',