message: Update vcpkg checkout commit.
  Previously vcpkg was relying on which is no longer available. The vcpkg source has been updated to use This PR updates the commit ID used to checkout vcpkg for the updated URL.
diff: @@ -10,7 +10,7 @@ environment:
  QT_DOWNLOAD_URL: 'https://github.com/sipsorcery/qt_win_binary/releases/download/qt598x64_vs2019_v1681/qt598_x64_vs2019_1681.zip'
  QT_DOWNLOAD_HASH: '00cf7327818c07d74e0b1a4464ffe987c2728b00d49d4bf333065892af0515c3'
  QT_LOCAL_PATH: 'C:\Qt5.9.8_x64_static_vs2019'
  - VCPKG_TAG: '2020.11-1'
  + VCPKG_TAG: '75522bb1f2e7d863078bcd06322348f053a9e33f'
  install:
  # Disable zmq test for now since python zmq library on Windows would cause Access violation sometimes.
  # - cmd: pip install zmq
  