Update individual CLA to reference GitLab Inc.

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/170625



Merged-by: Brendan Lynch <blynch@gitlab.com>
Approved-by: Brendan Lynch <blynch@gitlab.com>
Reviewed-by: Brendan Lynch <blynch@gitlab.com>
Co-authored-by: Dan Rhodes <drhodes@gitlab.com>
Co-authored-by: Tiffany Chen <tichen@gitlab.com>