Actions: Fix torch URL

We only build wheels for cuda 12

Signed-off-by: kingbri <bdashore3@proton.me>

Author: kingbri1

.github/workflows/build-wheels.yml

@@ -68,7 +68,7 @@ jobs:
           if (!(mamba list cuda)[-1].contains('cuda')) {sleep -s 10; mamba install -y 'cuda' $cudaChannels.TrimEnd().Split()}
           if (!(mamba list cuda)[-1].contains('cuda')) {throw 'CUDA Toolkit failed to install!'}
           
-          python -m pip install --upgrade build setuptools wheel packaging ninja torch==${{ matrix.torchver }} --extra-index-url "https://download.pytorch.org/whl/cu$cudaVersionPytorch"
+          python -m pip install --upgrade build setuptools wheel packaging ninja torch==${{ matrix.torchver }} --extra-index-url "https://download.pytorch.org/whl/cu121"
 
       - name: Build Wheel
         id: build-wheel