Merge pull request #278 from ruby-i18n/dependabot/bundler/psych-5.2.2

Bump psych from 5.2.1 to 5.2.2

Author: movermeyer

Gemfile.lock

@@ -85,7 +85,7 @@ GEM
       method_source (~> 1.0)
     pry-nav (1.0.0)
       pry (>= 0.9.10, < 0.15)
-    psych (5.2.1)
+    psych (5.2.2)
       date
       stringio
     racc (1.8.1)