Install venv before using venv

Author: ianayl

devops/actions/run-tests/benchmark/action.yml

@@ -90,6 +90,7 @@ runs:
       echo "-----"
       sycl-ls
       echo "-----"
+      apt install -y python3-venv
       python3 -m venv .venv
       . .venv/bin/activate
       pip install -r ./devops/scripts/benchmarks/requirements.txt