parallel apt (#2111)

.github/workflows/test.yml

@@ -269,6 +269,7 @@ jobs:
       - name: Install packages (cuda)
         if: matrix.backend == 'cuda' || matrix.backend == 'ptx' || matrix.backend == 'triton'
         run: |
+          echo 'Acquire::http::Pipeline-Depth "5";' | sudo tee -a /etc/apt/apt.conf.d/99parallel
           sudo apt update -y
           sudo apt install -y --no-install-recommends git g++ cmake ninja-build llvm-15-dev zlib1g-dev libglew-dev flex bison libfl-dev libboost-thread-dev libboost-filesystem-dev nvidia-cuda-toolkit-gcc
       - name: Cache gpuocelot