ci: Install python3-mako and liborc-dev packages in volk-gnsssdr-ubuntu job

.github/workflows/main.yml

@@ -123,9 +123,7 @@ jobs:
     steps:
     - uses: actions/checkout@v1
     - name: install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install mako
+      run: sudo apt install python3-mako liborc-dev
     - name: configure
       run: cd build && cmake ../src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr
     - name: build