Update PyPi publish action

Author: ndevenish

.github/workflows/python.yml

@@ -62,4 +62,4 @@ jobs:
           name: artifact
           path: dist
       - name: Publish package distributions to PyPI
-        uses: pypa/gh-action-pypi-publish@fb13cb306901256ace3dab689990e13a5550ffaa
+        uses: pypa/gh-action-pypi-publish@76f52bc884231f62b9a034ebfe128415bbaabdfc # v1.12.4