appium_lib.gemspec in appium_lib-9.2.0 vs appium_lib.gemspec in appium_lib-9.3.0

- old
+ new

@@ -26,8 +26,9 @@
 
   s.add_development_dependency 'rake', '~> 12.0'
   s.add_development_dependency 'yard', '~> 0.8'
 
   s.add_development_dependency 'rubocop', '~> 0.46.0'
+  s.add_development_dependency 'rainbow', '>= 2.1.0', '< 2.2.0' # workaround for Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
 
   s.files = `git ls-files`.split "\n"
 end