Merge branch 'trizzi-master-patch-47519' into 'master'

Update Dependency Proxy to ultimate only

See merge request gitlab-org/gitlab!23925

doc/administration/packages/dependency_proxy.md

-# GitLab Dependency Proxy administration **(PREMIUM ONLY)**
+# GitLab Dependency Proxy administration **(ULTIMATE ONLY)**
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab/issues/7934) in [GitLab Premium](https://about.gitlab.com/pricing/) 11.11.
 

doc/user/packages/dependency_proxy/index.md

-# Dependency Proxy **(PREMIUM ONLY)**
+# Dependency Proxy **(ULTIMATE ONLY)**
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab/issues/7934) in [GitLab Premium](https://about.gitlab.com/pricing/) 11.11.
+> [Introduced](https://gitlab.com/gitlab-org/gitlab/issues/7934) in [GitLab Ultimate](https://about.gitlab.com/pricing/) 11.11.
 
 NOTE: **Note:**
 This is the user guide. In order to use the dependency proxy, an administrator