Update dependency coverband to v6.1.3

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/169521



Merged-by: Roy Zwambag <rzwambag@gitlab.com>
Approved-by: Roy Zwambag <rzwambag@gitlab.com>
Co-authored-by: GitLab Renovate Bot <gitlab-bot@gitlab.com>