[CI] Fixes dependency on jbuilder

Author: picandocodigo

elasticsearch-api/elasticsearch-api.gemspec

@@ -62,10 +62,17 @@ Gem::Specification.new do |s|
   # Gems for testing integrations
   s.add_development_dependency 'jsonify'
   s.add_development_dependency 'hashie'
+  # Temporary support for Ruby 2.6, since it's EOL March 2022:
+  if RUBY_VERSION < '2.7.0'
+    s.add_development_dependency 'jbuilder', '< 7.0.0'
+  else
+    s.add_development_dependency 'activesupport'
+    s.add_development_dependency 'jbuilder'
+  end
 
   s.add_development_dependency 'cane'
   s.add_development_dependency 'escape_utils' unless defined? JRUBY_VERSION
-  s.add_development_dependency 'jbuilder'
+
   s.add_development_dependency 'require-prof' unless defined?(JRUBY_VERSION) || defined?(Rubinius)
   s.add_development_dependency 'simplecov'
   s.add_development_dependency 'test-unit', '~> 2'

elasticsearch-api/spec/spec_helper.rb

@@ -25,6 +25,10 @@
   require 'pry-byebug'
 end
 require 'ansi'
+require 'yaml'
+require 'active_support/isolated_execution_state' unless RUBY_VERSION < '2.7.0'
+require 'jbuilder'
+require 'jsonify'
 require 'elasticsearch'
 require 'elasticsearch-api'
 require 'elasticsearch-transport'