Fix python version outdated in CI.yml

Author: lawtancool

.github/workflows/CI.yml

@@ -16,10 +16,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python 3.8
-      uses: actions/setup-python@v1
-      with:
-        python-version: 3.8
+    - name: Set up Python
+      uses: actions/setup-python@v5.6.0
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip