Update ci.yaml to fix deprecated actions

Author: taddyb

.github/workflows/ci.yaml

@@ -10,11 +10,11 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v4.2.2
+      - uses: actions/setup-python@v4.9.1
         with:
-          python-version: 3.11
-      - uses: actions/cache@v2
+          python-version: 3.12
+      - uses: actions/cache@v4.2.3
         with:
           key: ${{ github.ref }}
           path: .cache