Update pypa/gh-action-pypi-publish digest to a8b73a6

Author: renovate[bot]

.github/workflows/python-publish.yml

@@ -30,7 +30,7 @@ jobs:
     - name: Build package
       run: python -m build
     - name: Publish package
-      uses: pypa/gh-action-pypi-publish@717ba43cfbb0387f6ce311b169a825772f54d295
+      uses: pypa/gh-action-pypi-publish@a8b73a6d88e1c2ae7ee7bf90b8ebba800a10f203
       with:
         user: __token__
         password: ${{ secrets.PYPI_API_TOKEN }}