updated coverage workflow

.github/workflows/coverage.yml

@@ -15,6 +15,8 @@ jobs:
       run: |
         pip install pytest pytest-cov
         pip install -e .[dev]
+    - name: Run Python setup
+      run: python -c "import penaltyblog as pb; pb.install_stan()"
     - name: Run tests with coverage
       run: pytest --cov --cov-report=xml
     - name: Upload coverage reports to Codecov