Update python-package.yml

Author: matthewdouglas

.github/workflows/python-package.yml

@@ -82,7 +82,7 @@ jobs:
         id: cuda-toolkit
         with:
           # Temporary: Use CUDA 12.9.0 for Windows until 12.9.1 is supported with this action.
-          cuda: ${{ matrix.cuda_version == '12.9.1' && '12.9.1' || matrix.cuda_version }}
+          cuda: ${{ matrix.cuda_version == '12.9.1' && '12.9.0' || matrix.cuda_version }}
           method: "network"
           sub-packages: '["nvcc","cudart","cusparse","cublas","thrust","nvrtc_dev","cublas_dev","cusparse_dev"]'
           linux-local-args: '["--toolkit"]'