Merge branch 'dpisek/321013/use-bulk-mutation' into 'master'

Use bulk-dismissal mutation on vulnerability report

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/124078



Merged-by: Savas Vedova <svedova@gitlab.com>
Approved-by: Lorenz van Herwaarden <lvanherwaarden@gitlab.com>
Approved-by: Savas Vedova <svedova@gitlab.com>
Reviewed-by: David Pisek <dpisek@gitlab.com>
Reviewed-by: Savas Vedova <svedova@gitlab.com>
Reviewed-by: Lorenz van Herwaarden <lvanherwaarden@gitlab.com>
Co-authored-by: Dave Pisek <dpisek@gitlab.com>