Update RBI files for rspec-expectations.

Library/Homebrew/sorbet/rbi/gems/rspec-expectations@3.10.2.rbi

@@ -1,9 +1,9 @@
+# typed: true
+
 # DO NOT EDIT MANUALLY
 # This is an autogenerated file for types exported from the `rspec-expectations` gem.
 # Please instead update this file by running `bin/tapioca gem rspec-expectations`.
 
-# typed: true
-
 module RSpec
   extend ::RSpec::Support::Warnings
   extend ::RSpec::Core::Warnings
@@ -1213,6 +1213,7 @@ class RSpec::Matchers::BuiltIn::RaiseError
 
   private
 
+  def actual_error_message; end
   def block_matches?; end
   def error_and_message_match?; end
   def eval_block; end