Merge branch 'feat/383178-enable-group-protected-branches' into 'master'

Introduce group-level protected branches

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/167753



Merged-by: Douglas Barbosa Alexandre <dbalexandre@gmail.com>
Approved-by: david hamp-gonsalves <dhamp-gonsalves@gitlab.com>
Approved-by: Douglas Barbosa Alexandre <dbalexandre@gmail.com>
Reviewed-by: Joe Woodward <jwoodward@gitlab.com>
Co-authored-by: Joe Woodward <j@joewoodward.me>

config/feature_flags/development/allow_protected_branches_for_group.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/383178
 milestone: '15.11'
 type: development
 group: group::source code
-default_enabled: false
+default_enabled: true