fix ci

Author: ValerianRey

.github/workflows/tests.yml

@@ -37,7 +37,7 @@ jobs:
         run: uv pip install --python-version=${{ matrix.python-version }} -e '.[full]' --group test
       - name: Run unit and doc tests with coverage report
         env:
-          PYTEST_TORCH_DEVICE: ${{ matrix.torch_device }}
+          PYTEST_TORCH_DEVICE: ${{ matrix.device }}
         run: uv run pytest -W error tests/unit tests/doc --cov=src --cov-report=xml
       - name: Upload results to Codecov
         uses: codecov/codecov-action@v4