Update rake release command

Author: picandocodigo

Rakefile

@@ -126,7 +126,8 @@ desc "Release all subprojects to Rubygems"
 task :release do
   RELEASE_TOGETHER.each do |project|
     next if project == 'elasticsearch-extensions'
-    sh "cd #{CURRENT_PATH.join(project)} && rake release"
-    puts '-'*80
+
+    sh "cd #{CURRENT_PATH.join(project)} && bundle exec rake release"
+    puts '-' * 80
   end
 end