Bump diff-lcs from 1.5.1 to 1.6.0 (#1033)

Bumps [diff-lcs](https://github.com/halostatue/diff-lcs) from 1.5.1 to 1.6.0.
- [Changelog](https://github.com/halostatue/diff-lcs/blob/main/CHANGELOG.md)
- [Commits](halostatue/diff-lcs@v1.5.1...v1.6.0)

---
updated-dependencies:
- dependency-name: diff-lcs
  dependency-type: indirect
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -23,7 +23,7 @@ GEM
     coderay (1.1.3)
     concurrent-ruby (1.3.5)
     connection_pool (2.5.0)
-    diff-lcs (1.5.1)
+    diff-lcs (1.6.0)
     drb (2.2.1)
     i18n (1.14.7)
       concurrent-ruby (~> 1.0)