Update python task to 3.12

Author: brianegge

.github/workflows/pull.yml

@@ -35,10 +35,11 @@ jobs:
     steps:
       - name: Check out code from GitHub
         uses: "actions/checkout@v2"
-      - name: Setup Python
-        uses: "actions/setup-python@v1"
+      - name: "Set up Python"
+        uses: actions/setup-python@v5.3.0
         with:
-          python-version: "3.8"
+          python-version: "3.12"
+          cache: "pip"
       - name: Install requirements
         run: python3 -m pip install -r requirements_test.txt
       - name: Run tests