build: add a step for publishing on pypi

Author: uriahf

.github/workflows/python-package.yml

@@ -32,4 +32,13 @@ jobs:
       run: uv sync --all-extras --dev
 
     - name: Run tests
-      run: uv run pytest tests
+      run: uv run pytest tests
+
+  publish:
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Publish package
+      run: uv publish