add draft 1.13.x upgrade guide (#18023)

* add draft upgrade guide

* add note this is a draft

* make 1.13 guide hidden

* add heading for alicloud change

website/content/docs/upgrading/upgrade-to-1.13.x.mdx

@@ -0,0 +1,24 @@
+---
+layout: docs
+page_title: Upgrading to Vault 1.13.x - Guides
+description: |-
+  This page contains the list of deprecations and important or breaking changes
+  for Vault 1.13.x. Please read it carefully.
+---
+
+~> Note: these are **draft** notes for a future version of Vault. They should not be considered
+official guidance until the release has been completed.
+
+# Overview
+
+This page contains the list of deprecations and important or breaking changes
+for Vault 1.13.x compared to 1.12. Please read it carefully.
+
+## Changes
+
+### AliCloud Auth Role Parameter
+
+The AliCloud auth plugin will now require the `role` parameter on login. This
+has always been documented as a required field but the requirement will now be
+enforced.
+

website/data/docs-nav-data.json

@@ -1701,6 +1701,11 @@
         "title": "Upgrade Plugins",
         "path": "upgrading/plugins"
       },
+      {
+        "title": "Upgrade to 1.13.x",
+        "path": "upgrading/upgrade-to-1.13.x",
+        "hidden": true
+      },
       {
         "title": "Upgrade to 1.12.x",
         "path": "upgrading/upgrade-to-1.12.x"