Add upcoming deprecations page (#307)

* Add upcoming deprecations page

* Add support link

Author: ofalvai

content/announcements/2023 September.md

@@ -1,6 +1,9 @@
 ---
 title: Upcoming stack changes for Xcode 14 and 15
 type: basic_page
+params:
+  archived: true
+bookHidden: true
 ---
 
 According to our [stack update policy](https://devcenter.bitrise.io/en/infrastructure/build-stacks/stack-update-policy.html) release of Xcode 15 GA means we'll be transitioning our current Edge stacks to the matching Stable stacks. This could present breaking changes for some workflows.

content/announcements/Upcoming stack deprecations.md

@@ -0,0 +1,30 @@
+---
+title: Upcoming stack deprecations
+type: basic_page
+---
+
+Stacks are not kept forever, older stacks are eventually marked for removal. You can read more about this in our [stack deprecation and removal policy](https://devcenter.bitrise.io/en/infrastructure/build-stacks/stack-deprecation-and-removal-policy.html).
+
+This page is an up-to-date overview of upcoming stack deprecations.
+
+### Upcoming stack deprecations
+
+The following table shows the currently deprecated stacks that are marked for removal.
+
+While the stack is marked as deprecated, you can still run builds on it, but it's recommended to migrate your workflows to a more modern stack. On the day of removal, remaining users will be migrated to the stack shown in the _Automatic migration to_ column. If you encounter any difficulties during migration or require support, our dedicated [customer support team](https://support.bitrise.io) would be happy to assist.
+
+| Stack ID                             | Deprecated from | Removed after | Automatic migration to           |
+| ------------------------------------ | --------------- | ------------- | -------------------------------- |
+| **osx-xcode-13.0.x**                 | 2024-02-21      | 2024-03-20    | osx-xcode-13.4.x                 |
+| **osx-xcode-13.0.x-rosetta**         | 2024-02-21      | 2024-03-20    | osx-xcode-14.2.x-ventura-rosetta |
+| **osx-xcode-13.1.x**                 | 2024-02-21      | 2024-03-20    | osx-xcode-13.4.x                 |
+| **osx-xcode-13.2.x**                 | 2024-02-21      | 2024-03-20    | osx-xcode-13.4.x                 |
+| **osx-xcode-13.2.x-rosetta**         | 2024-02-21      | 2024-03-20    | osx-xcode-14.2.x-ventura-rosetta |
+| **osx-xcode-13.3.x-rosetta**         | 2024-02-21      | 2024-03-20    | osx-xcode-14.2.x-ventura-rosetta |
+| **osx-xcode-13.4.x-rosetta**         | 2024-02-21      | 2024-03-20    | osx-xcode-14.2.x-ventura-rosetta |
+| **osx-xcode-14.0.x-ventura**         | 2024-02-21      | 2024-03-20    | osx-xcode-14.3.x-ventura         |
+| **osx-xcode-14.0.x-ventura-rosetta** | 2024-02-21      | 2024-03-20    | osx-xcode-14.2.x-ventura-rosetta |
+| **osx-xcode-14.1.x-ventura-rosetta** | 2024-02-21      | 2024-03-20    | osx-xcode-14.2.x-ventura-rosetta |
+| **linux-docker-android-20.04**       | August 2024*    | October 2024* | linux-docker-android-22.04       |
+
+*Exact date to be announced

content/announcements/curl-CVE-2023-38545.md

@@ -1,6 +1,9 @@
 ---
 title: cURL CVE-2023-38545
 type: basic_page
+params:
+  archived: true
+bookHidden: true
 ---
 
 The cURL project has recently published a security advisory for [CVE-2023-38545](https://curl.se/docs/CVE-2023-38545.html).

themes/bitrise/layouts/basic_page/list.html

@@ -1,5 +1,8 @@
 {{ define "main" }}
   {{ range sort .Paginator.Pages }}
+  {{ if .Params.params.archived }}
+    {{ continue }}
+  {{ end }}
   <article class="markdown book-post">
     <h2>
       <a href="{{ .RelPermalink }}">{{ partial "docs/title.html" . }}</a>

themes/bitrise/layouts/index.html

@@ -15,9 +15,11 @@ <h1>{{ .Title }}</h1>
         <section class="list-item">
             <h1 class="title"><a href="{{ .RelPermalink }}">{{.Title}}</a></h1>
             <ul>
-
             {{ range .Pages }}
-            <li><a href="{{ .RelPermalink }}">{{ .Title }}</li>
+              {{ if .Params.params.archived }}
+                {{ continue }}
+              {{ end }}
+              <li><a href="{{ .RelPermalink }}">{{ .Title }}</li>
             {{ end }}
             </ul>
         </section>