Merge pull request #378 from wordpress-mobile/dependabot/bundler/diffy-3.4.2

Bump diffy from 3.4.0 to 3.4.2

Author: jkmassel

Gemfile.lock

@@ -128,7 +128,7 @@ GEM
       rubocop (~> 1.0)
     declarative (0.0.20)
     diff-lcs (1.4.4)
-    diffy (3.4.0)
+    diffy (3.4.2)
     digest-crc (0.6.4)
       rake (>= 12.0.0, < 14.0.0)
     docile (1.4.0)