Update unittests-old.yml

Author: jan-janssen

.github/workflows/unittests-old.yml

@@ -27,7 +27,7 @@ jobs:
  timeout-minutes: 5
  run: |
  pip install versioneer[toml]==0.29
- conda create -y -n py312 python=3.12.1
+ conda create -y -n py312 python=3.12.1 pympipool
  pip install . --no-deps --no-build-isolation
  cd tests
  python -m unittest discover .