Switch to using trusted publishing on PyPI

Author: jobovy

.github/workflows/wheels.yml

@@ -108,6 +108,8 @@ jobs:
     name: Deploy to PyPI
     needs: [build_wheels, build_sdist]
     runs-on: ubuntu-latest
+    permissions:
+      id-token: write  # IMPORTANT: this permission is mandatory for trusted publishing
     if: github.event_name == 'release' && github.event.action == 'created'
     steps:
       - uses: actions/checkout@v4
@@ -121,7 +123,6 @@ jobs:
       - name: Publish distribution to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
-          password: ${{ secrets.pypi_token }}
           packages_dir: wheelhouse/
 # Deploy wheels and sdist to AWS S3 (main)
   deploy_s3: