Typo cp/paste back to pylint install

.github/workflows/pylint.yml

@@ -19,7 +19,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install flake8 pytest
+        pip install pylint
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
     - name: Analysing the code with pylint
       run: |