Update GH actions helpers to use Node 20-based versions (#214)

Author: stevejalim

.github/workflows/ci.yaml

@@ -23,9 +23,9 @@ jobs:
             - 'pypy-3.10'
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
@@ -42,8 +42,8 @@ jobs:
       - run-tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: 3.12
       - name: Install dependencies for package building only