Upgrade setuptools in workflow

Author: cclauss

.github/workflows/pip_install_on_python_prerelease.yml

@@ -16,5 +16,5 @@ jobs:
       with:
         python-version: 3.14
         allow-prereleases: true
-    - run: pip install --upgrade pip
+    - run: pip install --upgrade pip setuptools
     - run: pip install librabbitmq