message: Pin MacOS to v11 for CI pipeline
  MacOS 12 drops support for Python 2 which is required by the current
  version of electron-builder.
diff: @@ -17,7 +17,7 @@ jobs:
  os: windows-latest
  platform: win
  - kind: mac
  - os: macos-latest
  + os: macos-11
  platform: osx
  steps:
  - uses: actions/checkout@v3
  