Update ci.yml

Author: h0rn3t

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
       uses: actions/checkout@v2
 
     - name: Set up Python ${{ matrix.python }}
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python }}