TestGetSystemPythonExecutable.test_virtualenv test fail

The `TestGetSystemPythonExecutable.test_virtualenv` and `TestGetSystemPythonExecutable.test_venv` tests started failing all of a sudden.
Error was:
```
ModuleNotFoundError: No module named \'pytoml\'\n'
```
This ca be reproduced in local via:
```sh
pytest tests/test_pythonpackage_basic.py::TestGetSystemPythonExecutable::test_virtualenv
```

