Bump actions/setup-python from 5 to 6

Author: mathbunnyru

{{cookiecutter.stack_name}}/.github/workflows/docker.yml

@@ -47,7 +47,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Set Up Python 🐍
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: 3.12