The workflow is not valid. .github/workflows/cmake.yml (Line: 38, Col: 13): Unexpected symbol: '"windows-latest"'. Located at position 14 within expression: matrix.os != "windows-latest" .github/workflows/cmake.yml (Line: 42, Col: 13): Unexpected symbol: '"windows-latest"'. Located at position 14 within expression: matrix.os == "windows-latest"