Roll Fuchsia Mac SDK from Pz4ZHZrUp... to 6yEx5GNGG... (#22262)

diff --git a/DEPS b/DEPS
index 84efa31..18c8af9 100644
--- a/DEPS
+++ b/DEPS
@@ -516,7 +516,7 @@
      'packages': [
        {
         'package': 'fuchsia/sdk/core/mac-amd64',
-        'version': 'Pz4ZHZrUpeq1gYJiEULJkq4IiYaqsBoFW0gJimsn0IAC'
+        'version': '6yEx5GNGGI2YiKtz-e6IaeNWEVoL7lFtdADui7MREkAC'
        }
      ],
      'condition': 'host_os == "mac"',