Upgarde webrick to 1.8.2

The release includes a fix for the URI change in Ruby 3.4.

Author: kateinoigakukun

Gemfile

@@ -12,7 +12,7 @@ end
 
 group :check do
   # Use the latest version of webrick for URI change in Ruby 3.4
-  gem "webrick", github: "ruby/webrick", ref: "0c600e169bd4ae267cb5eeb6197277c848323bbe"
+  gem "webrick", "~> 1.8.2"
   gem "syntax_tree", "~> 3.5"
   gem "steep"
 end