docs(TestingWithJest): add deprecation notice banner (#5619)

Lukas742 · web-flow · commit f3625ed6cdbf · 2024-03-18T16:37:56.000+01:00
diff --git a/docs/knowledge-base/TestingWithJest.mdx b/docs/knowledge-base/TestingWithJest.mdx
@@ -6,6 +6,13 @@ import { Footer, TableOfContent } from '@sb/components';
 
 # Testing with Jest
 
+<MessageStrip
+  design={MessageStripDesign.Negative}
+  hideCloseButton
+  children="This section of our documentation is not maintained anymore and may contain outdated information! It will be removed with our next major release (v2.0.0)."
+  style={{ marginBlockEnd: '0.5rem' }}
+/>
+
 <MessageStrip
   design={MessageStripDesign.Warning}
   hideCloseButton
