Upgrade python setup to v5

actions/setup-python#1085

Author: rshriver

.github/workflows/python.yml

@@ -10,7 +10,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Install dependencies
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v5
       with:
         python-version: '3.9'
         cache: 'pip'