message: Run clang update script under python3 in webrtc DEPS file
  Cr-Commit-Position: refs/heads/main@{#35267}
diff: @@ -2475,7 +2475,7 @@ hooks = [
  # Note: On Win, this should run after win_toolchain, as it may use it.
  'name': 'clang',
  'pattern': '.',
  - 'action': ['python', 'src/tools/clang/scripts/update.py'],
  + 'action': ['python3', 'src/tools/clang/scripts/update.py'],
  },
  {
  # Update LASTCHANGE.
  