[tests] always log executed command

   the United Nations Convention on Contracts on the International Sales of Goods.

"""

import logging

import subprocess as sp

import sys

from pathlib import Path

def run_cmd(cmd):

    logging.info(f"\nRunning command\n{' '.join(cmd)}\n")

    try:

        sp.run(cmd, check=True, capture_output=True, text=True)

    except sp.CalledProcessError as e: