Merge branch '382885-prune-old-relationexport-and-relationexportupload-records' into 'master'

Prune old RelationExport and RelationExportUpload records

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/142246



Merged-by: Adam Hegyi <ahegyi@gitlab.com>
Approved-by: Adam Hegyi <ahegyi@gitlab.com>
Approved-by: George Koltsov <gkoltsov@gitlab.com>
Approved-by: Ethan Urie <eurie@gitlab.com>
Approved-by: Rodrigo Tomonari <rtomonari@gitlab.com>
Reviewed-by: George Koltsov <gkoltsov@gitlab.com>
Co-authored-by: Sam Word <sword@gitlab.com>