chore(deps): update pypa/gh-action-pypi-publish digest to 15c56db

Author: renovate[bot]

.github/workflows/python-publish.yml

@@ -27,7 +27,7 @@ jobs:
         run: python -m build
 
       - name: Publish package
-        uses: pypa/gh-action-pypi-publish@fb13cb306901256ace3dab689990e13a5550ffaa
+        uses: pypa/gh-action-pypi-publish@15c56dba361d8335944d31a2ecd17d700fc7bcbc
         with:
           user: __token__
           password: ${{ secrets.PYPI_API_TOKEN }}