Upgrade integration test's python version to 3.11 and upgrade setup-python to v4

Author: cffls

.github/workflows/main.yml

@@ -44,14 +44,14 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: [3.9]
+        python-version: ['3.11']
 
     steps:
       - uses: actions/checkout@v3
       - name: Install poetry
         run: pipx install poetry
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v3
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
           cache: 'poetry'