build: add pytest to yml file

Author: uriahf

.github/workflows/python-package.yml

@@ -34,6 +34,9 @@ jobs:
     - name: Install the project
       run: uv sync --all-extras --dev
 
+    - name: Run tests
+      run: uv run pytest tests
+
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v3
       with: