Resolve warnings node12 deprecation warnings

https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

Author: rayluo

.github/workflows/python-package.yml

@@ -29,9 +29,9 @@ jobs:
         python-version: [3.7, 3.8, 3.9, "3.10", "3.11", "3.12"]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       # It automatically takes care of pip cache, according to
       # https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#about-caching-workflow-dependencies
       with:
@@ -57,9 +57,9 @@ jobs:
     needs: ci
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python 3.9
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: 3.9
     - name: Install dependencies
@@ -97,9 +97,9 @@ jobs:
       )
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python 3.9
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: 3.9
     - name: Build a package for release