👷 add REUSE compliance check

.github/workflows/ubuntu.yml

@@ -140,9 +140,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: venv
-        run: python3 -mvenv venv
+      - uses: actions/setup-python@v3
       - name: install REUSE tool
-        run: venv/bin/pip3 install reuse
+        run:  python -m pip install reuse
       - name: REUSE lint
-        run: venv/bin/reuse lint
+        run: reuse lint