Add LD_LIBRARY_PATH

Author: NicolasHug

.github/workflows/linux_cuda_aarch64_wheel.yaml

@@ -109,6 +109,7 @@ jobs:
 
           conda install "ffmpeg=${{ matrix.ffmpeg-version-for-tests }}" -c conda-forge
           ffmpeg -version
+          echo LD_LIBRARY_PATH=$CONDA_PREFIX/lib:/usr/local/cuda/lib64/:${LD_LIBRARY_PATH} >> $GITHUB_ENV
 
       - name: Install test dependencies
         run: |