Merge branch '473026-eslint-9' into 'master'

Upgrade to ESLint 9

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/170631



Merged-by: Zack Cuddy <zcuddy@gitlab.com>
Approved-by: Daniele Rossetti <drossetti@gitlab.com>
Approved-by: David Dieulivol <ddieulivol@gitlab.com>
Approved-by: Zack Cuddy <zcuddy@gitlab.com>
Co-authored-by: Paul Gascou-Vaillancourt <paul.gascvail@gmail.com>