Fixed formatting

patch generated by https://gitlab.cern.ch/lhcb/DaVinci/-/jobs/16262624
3 jobs for 6-tupling-test-running-on-spruced-output in 36 seconds (queued for 1 second)
Status Name Job ID Coverage
  Test
passed check-copyright #16262786

00:00:21

passed check-formatting #16262787

00:00:35

passed python-linting #16262788
cvmfs

00:00:35