workflow: add/use venv

.forgejo/workflows/pylint.yml

@@ -14,7 +14,7 @@ jobs:
     - name: Install Package-based Deps
       run: |
         echo -e 'max_parallel_downloads=20\ndeltarpm=False\nfastestmirror=False' | tee -a /etc/dnf/dnf.conf
-        dnf -yq install nodejs git pylint python3-pip
+        dnf -yq install nodejs git pylint python3-pip python3-venv
         dnf clean all
 #    - name: "Set up Python ${{ matrix.python-version }}"
 #      uses: https://github.com/actions/setup-python@v3
@@ -23,8 +23,11 @@ jobs:
     - uses: actions/checkout@v3
     - name: Install Python Deps
       run: |
+        python3 -m venv venv
+        source venv/bin/activate
         python3 -m pip install --upgrade pip
         python3 -m pip install -r requirements.txt
     - name: Analysing the code with pylint
       run: |
+        source venv/bin/activate
         pylint $(git ls-files '*.py')