Log Message:
textproc/ruby-diff-lcs: update to 1.6.2

1.6.1 (2025-03-25)

* Performed further work on Diff::LCS::Ldiff improvements (#46) and resolve
  several thread safety issues cleanly by making it a class. #129

* Restructure the project to be more consistent with the rest of the
  projects that I manage.

* Increased GitHub action security.

* Added trusted publishing for fully automated releases.

1.6.2 (2025-05-12)

* Handle upcoming changes to the cgi gem in Ruby 3.5 (#147)

* Fix issues found with htmldiff in Ruby 1.8 (which is used approximately
  never, since the code change which broke Ruby 1.8 was made 6 years
  ago). #148

* Fixed some standardrb formatting and configuration issues.