Merge branch 'deprecate-sse' into 'master'

Deprecate Static Site Editor in 14.7

See merge request gitlab-org/gitlab!77246

data/deprecations/14-7-deprecate-static-site-editor.yml

+- name: "Removal of Static Site Editor" # The name of the feature to be deprecated
+  announcement_milestone: "14.7" # The milestone when this feature was first announced as deprecated.
+  announcement_date: "2022-01-22" # 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
+  removal_date: "2022-05-22" # This should almost always be the 22nd of a month (YYYY-MM-22), the date of the milestone release when this feature is planned to be removed.
+  body: | # Do not modify this line, instead modify the lines below.
+    The Static Site Editor will no longer be available starting in GitLab 15.0. Improvements to the Markdown editing experience across GitLab will deliver smiliar benefit but with a wider reach. Incoming requests to the Static Site Editor will be redirected to the Web IDE. Current users of the Static Site Editor can view the [documentation](https://docs.gitlab.com/ee/user/project/static_site_editor/) for more information, including how to remove the configuration files from existing projects.
+# The following items are not published on the docs page, but may be used in the future.
+  stage: Create # (optional - may be required in the future) String value of the stage that the feature was created in. e.g., Growth
+  tiers: [Free, Premium, Ultimate] # (optional - may be required in the future) An array of tiers that the feature is available in currently.  e.g., [Free, Silver, Gold, Core, Premium, Ultimate]
+  issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/347137 # (optional) This is a link to the deprecation issue in GitLab
+  documentation_url: https://docs.gitlab.com/ee/user/project/static_site_editor/ # (optional) This is a link to the current documentation page
+  image_url: # (optional) This is a link to a thumbnail image depicting the feature
+  video_url: # (optional) Use the youtube thumbnail URL with the structure of https://img.youtube.com/vi/UNIQUEID/hqdefault.jpg

doc/update/deprecations.md

@@ -337,6 +337,12 @@ It is now considered deprecated, and will be removed in GitLab 15.0.
 
 Planned removal milestone: 15.0 (2021-06-22)
 
+### Removal of Static Site Editor
+
+The Static Site Editor will no longer be available starting in GitLab 15.0. Improvements to the Markdown editing experience across GitLab will deliver smiliar benefit but with a wider reach. Incoming requests to the Static Site Editor will be redirected to the Web IDE. Current users of the Static Site Editor can view the [documentation](https://docs.gitlab.com/ee/user/project/static_site_editor/) for more information, including how to remove the configuration files from existing projects.
+
+Planned removal milestone: 15.0 (2022-05-22)
+
 ### Tracing in GitLab
 
 Tracing in GitLab is an integration with Jaeger, an open-source end-to-end distributed tracing system. GitLab users can navigate to their Jaeger instance to gain insight into the performance of a deployed application, tracking each function or microservice that handles a given request. Tracing in GitLab is deprecated in GitLab 14.7, and scheduled for removal in 15.0. To track work on a possible replacement, see the issue for [Opstrace integration with GitLab](https://gitlab.com/groups/gitlab-org/-/epics/6976).