Merge branch 'feature/group-level-protected-branches-rest-api-attr-inherited' into 'master'

Add the `inherited` field to Protected Branches

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/110602



Merged-by: Max Woolf <mwoolf@gitlab.com>
Approved-by: Vasilii Iakliushin <viakliushin@gitlab.com>
Approved-by: Max Woolf <mwoolf@gitlab.com>
Approved-by: Kevin Morrison <kmorrison@gitlab.com>
Co-authored-by: Amy Qualls <aqualls@gitlab.com>
Co-authored-by: Song Huang <songhuang@gitlab.cn>