Roll fuchsia/sdk/core/mac-amd64 from otkJA... to SlgE8... (#14407)

Roll fuchsia/sdk/core/mac-amd64 from otkJA... to SlgE8...

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  on the revert to ensure that a human
is aware of the problem.

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DEPS

@@ -532,7 +532,7 @@ deps = {
      'packages': [
        {
         'package': 'fuchsia/sdk/core/mac-amd64',
-        'version': 'otkJAJHPw68CJ4itPbDXj1RSMjEJ0yV3dwaCxgquRXcC'
+        'version': 'SlgE80z3O5_qKVaaxQfrvvypC_EzobVucr9UEA1wSxUC'
        }
      ],
      'condition': 'host_os == "mac"',