Fix ci build

CI build is currently failing with the following error:

```txt
cmd/flags_assigners.go:162:7: opts.PublicJobs undefined (type *gitlab.CreateProjectOptions has no field or method PublicJobs)
cmd/helpers.go:231:6: v.Email undefined (type *gitlab.GroupMember has no field or method Email)
```

Start by reading cmd/flags_assigners.go around line 162 and cmd/helpers.go around line 231, then run the CI build to reproduce the reported Go compiler errors. Check how the GitLab client types are used in those locations and update the affected references so the build completes without these errors.

Vom Indexierungsmodell aus dem Issue-Text verfasst.