ci: replace deprecated maturin upload with pypa/gh-action-pypi-publish

maturin upload/publish commands are deprecated (maturin#2334).
Use the official PyPA publish action with trusted publishing instead.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: mrecachinas

.github/workflows/pythonpackage.yml

@@ -169,7 +169,6 @@ jobs:
           merge-multiple: true
 
       - name: Publish to PyPI
-        uses: PyO3/maturin-action@v1
+        uses: pypa/gh-action-pypi-publish@release/v1
         with:
-          command: upload
-          args: --non-interactive dist/*
+          packages-dir: dist/