fix: update python-version: 3.11 for tests

Author: levinadev

.github/workflows/main.yml

@@ -21,10 +21,11 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
-        python-version: 3.12
+        python-version: 3.11
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip setuptools
+        python -m pip install --upgrade pip
+        python -m pip install "setuptools<81"
         pip install flake8==6.0.0 flake8-isort==6.0.0
         pip install -r ./backend/requirements.txt
     - name: Test with flake8 and django tests