Remove python version in the uv run ... invocation

.github/workflows/run-cluster.yaml

@@ -108,14 +108,13 @@ jobs:
           echo 'Invalid command submitted; command cannot be empty'
           exit 1
         fi
-        (uv run \
-          --python 3.12 \
+        uv run \
           .github/ci-scripts/job_runner.py \
           --working-dir ${{ inputs.working_dir }} \
           --entrypoint-script ${{ inputs.entrypoint_script }} \
           --entrypoint-args ${{ inputs.entrypoint_args }} \
           --env-vars '${{ inputs.env_vars }}' \
-          --enable-ray-tracing)
+          --enable-ray-tracing
     - name: Download log files from ray cluster
       run: |
         source .venv/bin/activate