publish to PyPI on each tag

.github/workflows/ci.yml

@@ -66,4 +66,27 @@ jobs:
       - name: Install tox
         run: pip install tox tox-gh-actions
       - name: Test with tox
-        run: tox -r
+        run: tox -r
+
+  publish-to-pypi:
+    name: >-
+      Publish Python 🐍 distribution 📦 to PyPI
+    if: startsWith(github.ref, 'refs/tags/')  # only publish to PyPI on tag pushes
+    needs:
+      - test-linux
+      - test-windows
+      - test-macos
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/ugropy
+    permissions:
+      id-token: write
+    steps:
+      - name: Download all the dists
+        uses: actions/download-artifact@v4
+        with:
+          name: python-package-distributions
+          path: dist/
+      - name: Publish distribution 📦 to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1