Benchmark against built version of prefect

.github/workflows/codspeed-benchmarks.yaml

@@ -61,7 +61,8 @@ jobs:
       - name: Install packages
         run: |
           python -m pip install -U uv
-          uv pip install --upgrade --system -e .[dev]
+          uv pip install pytest pytest-codspeed pytest-benchmark
+          python setup.py install
 
       - name: Start server
         run: |