message: Explicit windows-2019 environment
diff: @@ -263,7 +263,7 @@ jobs:
  ci-msvs:
  if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository
  - runs-on: ${{ matrix.toolset == 'v143' && 'windows-2022' || 'windows-latest' }}
  + runs-on: ${{ matrix.toolset == 'v143' && 'windows-2022' || 'windows-2019' }}
  strategy:
  fail-fast: false
  