Deprecation notice for `Versions` on base PackageType

data/deprecations/15-0-deprecation-versions-packagetype.yml

+- name: "Deprecate `Versions` on base `PackageType`"
+  announcement_milestone: "14.5" # The milestone when this feature was first announced as deprecated.
+  announcement_date: "2021-11-22" # The date of the milestone release when this feature was first announced as deprecated. This should almost always be the 22nd of a month (YYYY-MM-22), unless you did an out of band blog post.
+  removal_milestone: "15.0" # The milestone when this feature is planned to be removed
+  body: | # Do not modify this line, instead modify the lines below.
+    As part of the work to create a [Package Registry GraphQL API](https://gitlab.com/groups/gitlab-org/-/epics/6318), the Package group deprecated the `Version` type for the basic `PackageType` type and moved it to [`PackageDetailsType`](https://docs.gitlab.com/ee/api/graphql/reference/index.html#packagedetailstype).
+
+    In milestone 15.0, we will completely remove `Version` from `PackageType`.
+  stage: package
+  tiers: Free
+  issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/327453
+

doc/update/deprecations.md

@@ -58,6 +58,14 @@ dramatically slow down GitLab instances. For this reason, they are being removed
 
 Announced: 2021-09-22
 
+### Deprecate `Versions` on base `PackageType`
+
+As part of the work to create a [Package Registry GraphQL API](https://gitlab.com/groups/gitlab-org/-/epics/6318), the Package group deprecated the `Version` type for the basic `PackageType` type and moved it to [`PackageDetailsType`](https://docs.gitlab.com/ee/api/graphql/reference/index.html#packagedetailstype).
+
+In milestone 15.0, we will completely remove `Version` from `PackageType`.
+
+Announced: 2021-11-22
+
 ### GitLab Serverless
 
 [GitLab Serverless](https://docs.gitlab.com/ee/user/project/clusters/serverless/) is a feature set to support Knative-based serverless development with automatic deployments and monitoring.