Update actions/setup-python action to v7

Author: renovate[bot]

.github/workflows/python-publish.yml

@@ -23,7 +23,7 @@ jobs:
     steps:
       - uses: actions/checkout@v7
 
-      - uses: actions/setup-python@v6
+      - uses: actions/setup-python@v7
         with:
           python-version: "3.12"