Update ci.yml

Author: jimlehner

.github/workflows/ci.yml

@@ -14,16 +14,17 @@ jobs:
 
     strategy:
       matrix:
-        python-version: [3.10, 3.11]
+        python-version: ["3.10", "3.11"]
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+          cache: 'pip'
 
       - name: Upgrade pip
         run: |
@@ -35,4 +36,4 @@ jobs:
 
       - name: Run tests
         run: |
-          pytest tests/ --cov
+          pytest tests/ --cov