upgrade python version of expander.yml

Author: yosupo06

.github/workflows/expander.yml

@@ -12,11 +12,11 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: [3.5, 3.6]
+        python-version: [3.7, 3.8, 3.9, 3.10, 3.11]
     steps:
       - uses: actions/checkout@v2
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
       - name: Set up pytest