ci: minor CI fixes

.github/workflows/ci.yml

@@ -6,20 +6,14 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7, 3.8, 3.9]
+        python-version: ['3.7', '3.8', '3.9']
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
-    - uses: actions/cache@v2
-      name: Cache dependencies
-      with:
-        path: ~/.cache/pip
-        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements_dev.txt') }}
-        restore-keys: |
-          ${{ runner.os }}-pip-
+        cache: 'pip'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
@@ -32,16 +26,17 @@ jobs:
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
   deploy:
-    needs: [test]
-    if: startsWith(github.ref, 'refs/tags')
     name: Deploy
     runs-on: ubuntu-latest
+    needs: test
+    if: startsWith(github.ref, 'refs/tags')
     steps:
-    - uses: actions/checkout@master
+    - uses: actions/checkout@v4
     - name: Set up Python 3.9
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v5
       with:
-        python-version: 3.9
+        python-version: '3.9'
+        cache: 'pip'
     - name: Install pypa/build
       run: >-
         python -m