Attempt to fix CI

Author: slonopotamus

asciidoctor-fb2.gemspec

@@ -25,7 +25,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'asciidoctor-diagram', '~> 2.0'
   s.add_development_dependency 'rake', '~> 13.0'
   s.add_development_dependency 'rspec', '~> 3.13.0'
-  s.add_development_dependency 'rubocop', '~> 1.28.2'
+  s.add_development_dependency 'rubocop', '~> 1.70.0'
   s.add_development_dependency 'rubocop-rake', '~> 0.6.0'
-  s.add_development_dependency 'rubocop-rspec', '~> 2.10.0'
+  s.add_development_dependency 'rubocop-rspec', '~> 3.3'
 end