[CI] Bumps webmock development dependency

Author: picandocodigo

elasticsearch/elasticsearch.gemspec

@@ -59,7 +59,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rspec'
   s.add_development_dependency 'ruby-prof' unless defined?(JRUBY_VERSION) || defined?(Rubinius)
   s.add_development_dependency 'simplecov'
-  s.add_development_dependency 'webmock'
+  s.add_development_dependency 'webmock', '> 3.23'
   s.add_development_dependency 'yard'
 
   s.description = <<-DESC.gsub(/^    /, '')