Merge pull request #284 from jupyterhub/dependabot/github_actions/actions/setup-python-4

build(deps): bump actions/setup-python from 3 to 4

Author: yuvipanda

.github/workflows/python-publish.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/setup-python@v4
         with:
           python-version: "3.x"