Merge pull request #233 from mruby/dependabot/bundler/webrick-1.8.2

Author: matz

Gemfile.lock

@@ -278,7 +278,7 @@ GEM
       concurrent-ruby (~> 1.0)
     unicode-display_width (1.8.0)
     uri (0.13.0)
-    webrick (1.8.1)
+    webrick (1.8.2)
     yard (0.9.36)
     yard-coderay (0.1.0)
       coderay