smoke/class/i.rbi in steep-0.5.1 vs smoke/class/i.rbi in steep-0.6.0

@@ -1,9 +1,9 @@
 class IncompatibleSuper
   def foo: () -> Integer
   def initialize: (name: String) -> any
 end
 
-class IncompatibleChild <: IncompatibleSuper
+class IncompatibleChild < IncompatibleSuper
   def initialize: () -> any
   def (incompatible) foo: (Object) -> String
 end