Update workflow pushing to PyPi

Move away from using username / password login and instead use OIDC.

.github/workflows/push-to-pypi.yml

@@ -4,9 +4,14 @@ on:
 
 jobs:
   deploy:
+    name: Upload release to PyPI
     runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/coc.py
+    permissions:
+      id-token: write
     steps:
-    - uses: actions/checkout@v2
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
@@ -15,10 +20,8 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install setuptools wheel twine
-    - name: Build and publish
-      env:
-        TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
-        TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
+    - name: Build
       run: |
         python setup.py sdist bdist_wheel
-        twine upload dist/*
+    - name: Publish package distributions to PyPI
+      uses: pypa/gh-action-pypi-publish@release/v1