Update rubocop-rails requirement from ~> 2.25.0 to ~> 2.29.1

Updates the requirements on [rubocop-rails](https://github.com/rubocop/rubocop-rails) to permit the latest version.
- [Release notes](https://github.com/rubocop/rubocop-rails/releases)
- [Changelog](https://github.com/rubocop/rubocop-rails/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop-rails@v2.25.0...v2.29.1)

---
updated-dependencies:
- dependency-name: rubocop-rails
  dependency-version: 2.29.1
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

publify_textfilter_code.gemspec

@@ -25,7 +25,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency "rspec-rails", "~> 6.0"
   s.add_development_dependency "rubocop", "~> 1.65.1"
   s.add_development_dependency "rubocop-performance", "~> 1.21.1"
-  s.add_development_dependency "rubocop-rails", "~> 2.25.0"
+  s.add_development_dependency "rubocop-rails", "~> 2.29.1"
   s.add_development_dependency "rubocop-rspec", "~> 3.0.1"
   s.add_development_dependency "simplecov", "~> 0.22.0"
   s.add_development_dependency "sqlite3", "~> 1.4"