Merge pull request #270 from mruby/dependabot/bundler/yard-0.9.42

Author: matz

Gemfile.lock

@@ -109,7 +109,7 @@ GEM
     tsort (0.2.0)
     unicode-display_width (2.6.0)
     webrick (1.9.2)
-    yard (0.9.40)
+    yard (0.9.42)
     yard-coderay (0.1.0)
       coderay
       yard