fix setuptools version

Author: portellaa

.github/workflows/pull-request.yml

@@ -57,6 +57,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         python -m pip install ".[dev,test]"
+        python -m pip install "setuptools<80"
 
     - name: Install pre-commit hooks
       run: pre-commit install --install-hooks