Importruns: include backtrace into exception handling logging

[okt-alexanku]

importruns command logs catched exceptions as str(e)

bublik/bublik/interfaces/management/commands/importruns.py

Line 332 in e9e3c93

logger.error(str(e))

        except Exception as e:
            create_event(
                facility=EventLog.FacilityChoices.IMPORTRUNS,
                severity=EventLog.SeverityChoices.ERR,
                msg=f'failed import {run_url} '
                f'-- {task_msg} '
                f'-- Error: {e!s} '
                f'-- runtime: {runtime(import_run_start_time)} sec',
            )
            logger.error(str(e))

Such error reporting is not so informative since exception backtrace is not shown.
Please use logger.exception() instead of logger.error() to log backtrace also.