Bump diffy from 3.4.2 to 3.4.3

Bumps [diffy](https://github.com/samg/diffy) from 3.4.2 to 3.4.3.
- [Changelog](https://github.com/samg/diffy/blob/main/CHANGELOG)
- [Commits](https://github.com/samg/diffy/commits)

---
updated-dependencies:
- dependency-name: diffy
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -110,7 +110,7 @@ GEM
       irb (~> 1.10)
       reline (>= 0.3.8)
     diff-lcs (1.5.1)
-    diffy (3.4.2)
+    diffy (3.4.3)
     dockerfile-rails (1.6.22)
       rails (>= 3.0.0)
     dotenv (3.1.4)