Add artifact name during download

Author: daneah

.github/workflows/ch07-packaging.yml

@@ -140,6 +140,7 @@ jobs:
     steps:
       - uses: actions/download-artifact@v2
         with:
+          name: artifact
           path: ./ch07/first-python-package/dist # Update to match root of package
 
       - uses: pypa/gh-action-pypi-publish@v1.4.2