fix: resolve CI workflow - use python -m prefix for pytest and ruff

.gitea/workflows/ci.yml

@@ -25,9 +25,9 @@ jobs:
 
       - name: Run tests
         run: |
-          pytest -v
+          python -m pytest -v
 
       - name: Run linting
         run: |
           pip install ruff
-          ruff check cmdparse/ tests/
+          python -m ruff check cmdparse/ tests/