sorbet: Update RBI files.

Autogenerated by the [sorbet](https://github.com/Homebrew/brew/blob/master/.github/workflows/sorbet.yml) workflow.

Library/Homebrew/sorbet/rbi/hidden-definitions/hidden.rbi

@@ -6187,6 +6187,11 @@ class CompilerSelector::Compiler
   def self.members(); end
 end
+class CompilerSelector
+  extend ::T::Private::Methods::MethodHooks
+  extend ::T::Private::Methods::SingletonMethodHooks
+end
+
 class Concurrent::Promises::AbstractEventFuture
   include ::Concurrent::Promises::InternalStates
 end