PLASO_LOG_FOLDER is set to [/var/log/timesketch/psort/] but could not be created/accessed

[jaegeral]

  [2026-01-07 09:30:33,276] timesketch.tasks/ERROR PLASO_LOG_FOLDER is set to [/var/log/timesketch/psort/] but could not be created/accessed: [Errno 13] Permission denied: '/var/log/timesketch'. Logging falling back to /dev/null.

With #3647 the plaso log folder was configurable, but it seems in the docker containers for e2e testing, that directory is not writable.