Publish to PyPI via trusted publishing

.github/workflows/release.yml

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+# Publish sos to PyPI using PyPI Trusted Publishing (OIDC), no API token needed.
+#
+# PyPI trusted publisher settings for this workflow:
+#   PyPI Project Name: sos
+#   Owner:             vatlab
+#   Repository name:   SoS
+#   Workflow name:     release.yml
+#   Environment name:  pypi
+#
+# https://docs.pypi.org/trusted-publishers/
+
+name: Release
+
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Build distributions
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+
+      - name: Build sdist and wheel
+        run: |
+          python -m pip install --upgrade pip build
+          python -m build
+
+      - name: Check distributions
+        run: |
+          python -m pip install --upgrade twine
+          twine check dist/*
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: dist
+          path: dist/
+
+  publish:
+    name: Publish to PyPI
+    needs: [build]
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/sos
+    permissions:
+      id-token: write  # required for trusted publishing
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist/
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1