Build(deps): Bump diffy from 3.3.0 to 3.4.0

Build(deps): Bump diffy from 3.3.0 to 3.4.0

Bumps diffy from 3.3.0 to 3.4.0.

Signed-off-by: dependabot-preview[bot] support@dependabot.com

diff --git a/Gemfile.lock b/Gemfile.lock
index 52fd732..c7155af 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -97,7 +97,7 @@ GEM
       addressable
     debug_inspector (0.0.3)
     diff-lcs (1.4.4)
-    diffy (3.3.0)
+    diffy (3.4.0)
     discourse-ember-source (3.12.2.2)
     discourse_image_optim (0.26.2)
       exifr (~> 1.2, >= 1.2.2)

GitHub sha: 07dc5b52

This commit appears in #10396 which was merged by eviltrout.