docs: add deprecation notices on v1.x versions in changelog (#3203)

Add deprecation `<Caution>` on v1.x versions in changelog

Author: Meschreiber

docs/source/reference/federation/versions.mdx

@@ -981,6 +981,12 @@ Value types
 
 ## v1.1
 
+<Caution>
+
+Apollo Router Core and GraphOS Router v1.60 and later don't support Federation v1.x supergraphs.
+
+</Caution>
+
 #### Directive changes
 
 <table>
@@ -1018,6 +1024,12 @@ directive @tag(name: String!) repeatable on
 
 ## v1.0
 
+<Caution>
+
+Apollo Router Core and GraphOS Router v1.60 and later don't support Federation v1.x supergraphs.
+
+</Caution>
+
 #### Directive changes
 
 For details on these directives as defined in Federation 1, see the [Federation 1 subgraph spec](/federation/v1/federation-spec).