Change the deprecation message for dynamic routes segment to 6.1

actionpack/lib/action_dispatch/routing/route_set.rb

@@ -591,14 +591,14 @@ def add_route(mapping, name)
         if route.segment_keys.include?(:controller)
           ActiveSupport::Deprecation.warn(<<-MSG.squish)
             Using a dynamic :controller segment in a route is deprecated and
-            will be removed in Rails 6.0.
+            will be removed in Rails 6.1.
           MSG
         end
 
         if route.segment_keys.include?(:action)
           ActiveSupport::Deprecation.warn(<<-MSG.squish)
             Using a dynamic :action segment in a route is deprecated and
-            will be removed in Rails 6.0.
+            will be removed in Rails 6.1.
           MSG
         end