DOCSP-38853 Add banner to 2.0 doc pages (#68)

* DOCSP-38853 Add warning to 2.0 doc pages

* DOCSP-38853 updates for JW's feedback

Author: kanchana-mongodb

snooty.toml

@@ -322,3 +322,13 @@ vercel = "`Vercel <https://www.vercel.com/>`__"
 vercel-mdb = "`MongoDB Atlas Integration in Vercel <https://www.vercel.com/integrations/mongodbatlas>`__"
 vercel-dynamic = "`dynamic IP addresses <https://www.vercel.com/support/articles/how-to-allowlist-deployment-ip-address>`__"
 
+[[banners]]
+# permanent banner for v2.0 only
+targets = [
+    "*"
+]
+
+variant = "warning"
+value = """
+        This release contains an issue that prevents |ak8so| from reconciling the   :ref:`atlasbackupschedule-custom-resource` when :ref:`deletion protection <deletion-protection>` is enabled. Don't use this version (2.0.0), and instead use |ak8so| :atlas:`2.1.0 </operator/v2.1/>`.
+        """