Draft: Remove 'self_signed_cert' option from gitlab-shell client
Contributes to https://gitlab.com/gitlab-org/gitlab-shell/-/issues/541
- Removes usage of 'self_signed_cert' option (removed in gitlab-shell!602 (merged))
Edited by Vasilii Iakliushin
Contributes to https://gitlab.com/gitlab-org/gitlab-shell/-/issues/541