CI: update PyPI publishing workflow to use OpenID Connect approach

.github/workflows/publish-pypi.yml

@@ -1,6 +1,7 @@
-# This workflow will upload a Python Package using flit when a release is
-# created.  For more information see:
-# https://help.github.com/en/actions/language-and-framework-guides/using-python-with-github-actions#publishing-to-package-registries
+# This workflows will upload a Python Package when a release is created.
+# For more information see:
+# - https://docs.pypi.org/trusted-publishers/adding-a-publisher/
+# - https://github.com/pypa/gh-action-pypi-publish
 
 name: Upload Python Package
 
@@ -12,23 +13,25 @@ jobs:
   deploy:
 
     runs-on: ubuntu-latest
+    permissions:
+      id-token: write
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+
       - name: Set up Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: '3.x'
-      - name: Install dependencies
+
+      - name: Build package
         run: |
+          set -vxeuo pipefail
           python -m pip install --upgrade pip
-          pip install wheel twine setuptools
-      - name: Build and publish
-        env:
-          TWINE_USERNAME: __token__
-          # The PYPI_PASSWORD must be a pypi token with the "pypi-" prefix with sufficient permissions to upload this package
-          # https://pypi.org/help/#apitoken
-          TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}
-        run: |
+          pip install wheel setuptools
           python setup.py sdist bdist_wheel
-          twine upload dist/*
+
+      - name: Publish wheels to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          packages-dir: ./dist/

.github/workflows/testing.yml

@@ -6,10 +6,13 @@ on:
 
 jobs:
   build:
+    # pull requests are a duplicate of a branch push if within the same repo.
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.repository
+
     strategy:
       matrix:
         host-os: ["ubuntu-latest", "macos-latest", "windows-latest"]
-        python-version: ["3.7", "3.8", "3.9"]
+        python-version: ["3.8", "3.9", "3.10"]
       fail-fast: false
 
     runs-on: ${{ matrix.host-os }}
@@ -19,7 +22,7 @@ jobs:
         shell: bash -l {0}
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - uses: conda-incubator/setup-miniconda@v2
         with: