ci: switch to PyPI trusted publishing

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: supermihi

.github/workflows/default.yml

@@ -48,6 +48,8 @@ jobs:
     runs-on: ubuntu-latest
     needs: [build_wheels, sdist]
     if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+    permissions:
+      id-token: write
     steps:
       - name: download source wheel
         uses: actions/download-artifact@v7
@@ -63,7 +65,4 @@ jobs:
       - name: publish package pypi.org
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
-          user: __token__
-          password: ${{ secrets.PYPI_API_TOKEN }}
-          skip-existing: true
           packages-dir: wheels