update workflow file

Author: Sceki

.github/workflows/build.yml

@@ -29,7 +29,7 @@ jobs:
         pip install matplotlib
         pip install jupyter
         pip install numpy
-        pip install torch==1.11.0+cpu torchvision==0.12.0+cpu torchaudio==0.11.0+cpu -f https://download.pytorch.org/whl/cpu/torch_stable.html
+        pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cpu
         pip install .[dev]
         pip install sphinx
         pip install sphinx-book-theme
@@ -49,4 +49,4 @@ jobs:
       if: ${{ github.event_name == 'push' }}
       uses: JamesIves/github-pages-deploy-action@v4
       with:
-        folder: docs/_build/html # The folder the action should deploy.
+        folder: docs/_build/html # The folder the action should deploy.