message: Replace build os windows-2016 by windows-2019.
diff: @@ -11,7 +11,7 @@ jobs:
  strategy:
  matrix:
  - os: [windows-latest, windows-2016]
  + os: [windows-latest, windows-2019]
  architecture: [Win32, x64]
  build_type: [Debug, Release]
  cxx_standard: [11, 14, 17, 20]
  