Update rails requirement from = 6.1.4 to = 6.1.4.1 (#47)

Updates the requirements on [rails](https://github.com/rails/rails) to permit the latest version.
- [Release notes](https://github.com/rails/rails/releases)
- [Commits](rails/rails@v6.1.4...v6.1.4.1)

---
updated-dependencies:
- dependency-name: rails
  dependency-type: direct:development
...

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angular_rails_csrf.gemspec

@@ -24,7 +24,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rake', '~> 13.0'
   s.add_development_dependency 'test-unit', '~> 3.2'
   if ENV['TEST_RAILS_VERSION'].nil?
-    s.add_development_dependency 'rails', '6.1.4'
+    s.add_development_dependency 'rails', '6.1.4.1'
   else
     s.add_development_dependency 'rails', ENV['TEST_RAILS_VERSION'].to_s
   end