Roll Fuchsia Mac SDK from fCHnB... to 3o9aQ... (#18528)

diff --git a/DEPS b/DEPS
index 4c152e7..cc6cac3 100644
--- a/DEPS
+++ b/DEPS
@@ -549,7 +549,7 @@
      'packages': [
        {
         'package': 'fuchsia/sdk/core/mac-amd64',
-        'version': 'fCHnBPdiCTlEPVVVdOlSDzUL79Kgde9uzwThDkNbrqwC'
+        'version': '3o9aQQIMtRcCVJe7E5fFtkh240rXaqiS62FrYsaGvoAC'
        }
      ],
      'condition': 'host_os == "mac"',