Merge branch '344216-enable-dp-manifest-workhorse-by-default' into 'master'

Enable dependency_proxy_manifest_workhorse by default

See merge request gitlab-org/gitlab!73770

config/feature_flags/development/dependency_proxy_manifest_workhorse.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/344216
 milestone: '14.4'
 type: development
 group: group::package
-default_enabled: false
+default_enabled: true