Merge branch 'schwartz-deprecation-template-make-date-required' into 'master'

Make date required

See merge request gitlab-org/gitlab!70542

data/deprecations/templates/example.yml

@@ -29,5 +29,5 @@
   documentation_url: # (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
-  announcement_date: # (optional - may be required in the future) YYYY-MM-DD format - the date of the milestone release when this feature was first announced as deprecated
+  announcement_date: # YYYY-MM-DD format - the date of the milestone release when this feature was first announced as deprecated
   removal_date: # (optional - may be required in the future) YYYY-MM-DD format - the date of the milestone release when this feature is planned to be removed