no more caching packages, due to issues

.github/workflows/build-firmware.yaml

@@ -10,19 +10,21 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: "Get dependencies"
-        uses: awalsh128/cache-apt-pkgs-action@v1
-        with:
-          version: 1
-          execute_install_scripts: true
-          packages: cmake gcc-arm-none-eabi libnewlib-arm-none-eabi libstdc++-arm-none-eabi-newlib
+        run: sudo apt-get -y install cmake gcc-arm-none-eabi libnewlib-arm-none-eabi libstdc++-arm-none-eabi-newlib
+        # This doesn't appear to work due to issues with 'nosys.specs'
+        # uses: awalsh128/cache-apt-pkgs-action@v1
+        # with:
+        #   version: 1
+        #   execute_install_scripts: true
+        #   packages: cmake gcc-arm-none-eabi libnewlib-arm-none-eabi libstdc++-arm-none-eabi-newlib
       - name: "Checkout repo"
         uses: actions/checkout@v4
         with:
           submodules: recursive
       - name: "CMake setup"
         run: cd firmware/ && mkdir build/ && cd build/ && cmake ..
       - name: "Build with make"
-        run: cd firmware/build/ && make
+        run: cd firmware/build/ && make -j2
       - name: "Upload artifact"
         uses: actions/upload-artifact@v4
         with: