Merge branch 'bwill/escape-newlines-from-vulnerability-export' into 'master'

Remove newlines from vulnerability export CSV

Closes #472930

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/160439



Merged-by: Michael Becker <11881043-wandering_person@users.noreply.gitlab.com>
Approved-by: Mehmet Emin INAC <minac@gitlab.com>
Approved-by: Michael Becker <11881043-wandering_person@users.noreply.gitlab.com>
Co-authored-by: Brian Williams <bwilliams@gitlab.com>