the `test_no_errors_or_warnings_in_output` misses KeyboardInterrupt errors

[slayoo]

this is how a notebook source looks if committed after a Keyboard interrupt:

   "outputs": [
    {
     "ename": "KeyboardInterrupt",
     "evalue": "",
     "output_type": "error",
     "traceback": [
      "\u001B[31m---------------------------------------------------------------------------\u001B[39m",
      "\u001B[31mKeyboardInterrupt\u001B[39m                         Traceback (most recent call last)",

which is not considered in the test at the version used currently in PySDM (https://github.com/open-atmos/devops_tests/tree/231c989f109a1da47ad77f240db7a6b693983377)