Generate new zdesk_api. See full commit message.

- new from documentation
apps_installations_job_status_show
bookmark_create
bookmark_delete
bookmarks_list
dynamic_content_item_create
dynamic_content_item_delete
dynamic_content_item_show
dynamic_content_item_update
dynamic_content_item_variant_delete
dynamic_content_item_variant_show
dynamic_content_item_variant_update
dynamic_content_item_variants_update_many_update
dynamic_content_items_list
organization_subscription_create
organization_subscription_delete
organization_subscription_show
organization_subscriptions
organization_subscriptions_list
sessions_list
ticket_reset_sla_policy_update
user_organization_subscriptions
user_session_delete
user_session_show
user_sessions
user_sessions_delete
users_me_sessions

- removed by documentation
channels_voice_agent_ticket_display_create
channels_voice_agent_user_display_create
channels_voice_ticket_create
help_center_answer_down_create
help_center_answer_up_create
help_center_question_down_create
help_center_question_up_create
help_center_questions_search

- modified by documentation
voice api docstrings changed
help_center_articles_search added parameters label_names, category, section
help_center_sections_list added parameter include
ticket_metric_show parameter changed name from id to ticket_metric_id
ticket_metrics parameter changed name from id to ticket_id

- patch work
removed patch for ticket comment typos - Zendesk has corrected them
added patch for upload_create. add parameters filename and token
added patch for adding external_id to tickets_list