Merge branch 'bojan/add-attribution-notice-to-bugzilla' into 'master'

Adds attribution_notice to Bugzilla integration

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/144166



Merged-by: Justin Ho Tuan Duong <hduong@gitlab.com>
Approved-by: James Nutt <jnutt@gitlab.com>
Approved-by: Carla Drago <cdrago@gitlab.com>
Approved-by: Justin Ho Tuan Duong <hduong@gitlab.com>
Reviewed-by: Bojan Marjanovic <bmarjanovic@gitlab.com>
Reviewed-by: James Nutt <jnutt@gitlab.com>
Co-authored-by: bmarjanovic <bmarjanovic@gitlab.com>