Roll Clang Mac from gi-ivU51h... to pjqtsy0Ek...

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

To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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

Author: skia-flutter-autoroll

DEPS

@@ -579,7 +579,7 @@ deps = {
     'packages': [
       {
         'package': 'fuchsia/third_party/clang/mac-amd64',
-        'version': 'gi-ivU51hLEmgL3m_giEo-uJOhzJgdYslQ0dvUvAJxcC'
+        'version': 'pjqtsy0EkprqQK20GImo0tXIwVJ5oygbAPUHOqmGRlwC'
       }
     ],
     'condition': 'host_os == "mac"',