Update to pypa/gh-action-pypi-publish 1.12.3

After this update, `pypa/gh-action-pypi-publish` will pull a pre-built
Docker image from GHCR (GitHub Container Registry) instead of building
the Docker image at the beginning of each GitHub Actions run.

https://github.com/pypa/gh-action-pypi-publish/releases/tag/v1.12.3

.github/workflows/ci.yml

@@ -379,7 +379,7 @@ jobs:
           name: ${{ needs.setup.outputs.repo-name }}-${{ github.ref_name }}
           path: dist
       - name: Publish Python package to PyPI
-        uses: pypa/gh-action-pypi-publish@fb13cb306901256ace3dab689990e13a5550ffaa
+        uses: pypa/gh-action-pypi-publish@67339c736fd9354cd4f8cb0b744f2b82a74b5c70
   changelog:
     if: github.ref_type == 'tag'
     needs: [setup, python, docker, pypi]