Info. Flakey test. test_diff_[correctout_prep.txt] can still sporadically fail (observed in Python 3.11)

[JamesParrott]

PASSED test_gathering_windows_command_line_tests.py::test_diff_[correctout_geom.txt]
FAILED test_gathering_windows_command_line_tests.py::test_diff_[correctout_prep.txt] - AssertionError: Error on line num i: 19.  This line (and up to the 9 previous ones):
  Expected: 'Reading features from prep_crash_shapefile\\shapefilepreparecrash'
  'Reading features from prep_crash_shapefile\\shapefilepreparecrash'
  '  sDNA is running in 64-bit mode'
  '  Fixing near miss connections'
  '  Fixing duplicate links'
  '  Checking for isolated systems'
  '  Largest system contains 21523 links'
  '7-link subsystem contains link with id = 8285'
  '6-link subsystem contains link with id = 9654'
  '4-link subsystem contains link with id = 8028', 
  
   Actual: 'Reading features from prep_crash_shapefile\\shapefilepreparecrash'
  'Reading features from prep_crash_shapefile\\shapefilepreparecrash'
  '  sDNA is running in 64-bit mode'
  '  Fixing near miss connections'
  '  Fixing duplicate links'
  '  Checking for isolated systems'
  '  Largest system contains 21523 links'
  '7-link subsystem contains link with id = 8285'
  '6-link subsystem contains link with id = 9654'
  '4-link subsystem contains link with id = 12290'
assert '4-link subsy...th id = 12290' == '4-link subsy...ith id = 8028'
  
  - 4-link subsystem contains link with id = 8028
  ?                                          ^ --
  + 4-link subsystem contains link with id = 12290
  ?                                          ^^^^
======================== 1 failed, 9 passed in 13.23s =========================