Bump diffy from 3.4.0 to 3.4.2 (JabRef#6107)

dependabot[bot] · web-flow · commit d1e7576807d5 · 2022-06-25T06:32:15.000-04:00
diff --git a/Gemfile.lock b/Gemfile.lock
@@ -33,7 +33,7 @@ GEM
     csl-styles (2.0.0)
       csl (~> 2.0)
     diff-lcs (1.5.0)
-    diffy (3.4.0)
+    diffy (3.4.2)
     dotenv (2.7.6)
     erubis (2.7.0)
     faraday (1.8.0)
