Update workflow to use PyPI's trusted publishing

Author: danhje

.github/workflows/CI.yml

@@ -107,12 +107,12 @@ jobs:
     runs-on: ubuntu-latest
     if: "startsWith(github.ref, 'refs/tags/')"
     needs: [linux, windows, macos, sdist]
+    permissions:
+      id-token: write
     steps:
       - uses: actions/download-artifact@v4
       - name: Publish to PyPI
         uses: PyO3/maturin-action@v1
-        env:
-          MATURIN_PYPI_TOKEN: ${{ secrets.PYPI_API_TOKEN }}
         with:
           command: upload
           args: --non-interactive --skip-existing wheels-*/*