require ‘fileutils’ explicitly

soutaro · soutaro · commit 49edf977cedc · 2025-08-15T12:45:12.000+09:00
diff --git a/lib/rbs/collection.rb b/lib/rbs/collection.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 require 'yaml'
+require 'fileutils'
 
 require_relative './cli/colored_io'
 require_relative './collection/sources'
