requirement: fix libsystemd-dev placement

.github/workflows/pylint.yml

@@ -16,10 +16,10 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
+        apt install -y libsystemd-dev
         python3 -m pip install --upgrade pip
         pip3 install -r requirements.txt
         pip3 install pylint
-        apt install -y libsystemd-dev
     - name: Analysing the code with pylint
       run: |
         pylint $(git ls-files '*.py')