Add setuptools into installation list

See https://docs.python.org/3/whatsnew/3.12.html for documentation on its possible removal in virtual environments.

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11'] #'3.13' , '3.12'
+        python-version: ['3.9', '3.10', '3.11', '3.12'] #'3.13' 
 
     steps:
       - uses: actions/checkout@v4
@@ -22,6 +22,7 @@ jobs:
           python -m pip install pytest pytest-mock pytest-cov
           pip install -r requirements.txt
           pip install CytofDR
+          python -m pip install setuptools
           python setup.py install
       - name: Test with pytest
         run: |