Update activesupport to 7.1.3.4

Author: kenyonj

.gitignore

@@ -6,3 +6,4 @@ Gemfile.lock
 .buildpath
 *~
 vendor/
+.DS_Store

github-markup.gemspec

@@ -21,7 +21,7 @@ Gem::Specification.new do |s|
   s.require_paths = %w[lib]
 
   s.add_development_dependency 'rake', '~> 12'
-  s.add_development_dependency 'activesupport', '~> 4.0'
+  s.add_development_dependency 'activesupport', '~> 7.1.3.4'
   s.add_development_dependency 'minitest', '~> 5.4', '>= 5.4.3'
   s.add_development_dependency 'html-pipeline', '~> 1.0'
   s.add_development_dependency 'sanitize', '>= 4.6.3'