DO NOT MERGE: use PRIVATE-TOKEN header instead of Authorization
FOR TESTING PURPOSES ONLY - DO NOT MERGE!!!
Description
This MR replaces Authorization: Bearer ${token} header with PRIVATE-TOKEN: ${token} header for testing of GitLab Cells 1.0 which doesn't support Authorization header gitlab#441138 (closed)
This only works with Personal Access Token (PAT) not with OAuth Token!!
Set up the personal access token with the GitLab: Add GitLab Account command in VS Code.