chore(actions): update pypa/gh-action-pypi-publish action to v1.6.4 (#12)

Author: renovate[bot]

.github/workflows/release.yml

@@ -57,7 +57,7 @@ jobs:
         release-tag: ${{ needs.prepare.outputs.version }}
 
     - name: Upload package to pypi
-      uses: pypa/gh-action-pypi-publish@v1.5.1
+      uses: pypa/gh-action-pypi-publish@v1.6.4
       with:
         user: ${{ secrets.PRIVATE_PYPI_USERNAME }}
         password: ${{ secrets.PRIVATE_PYPI_PASSWORD }}