chore: Use "create!" and "save!" bang methods when not checking the result (#5358)

* Use "create!" when not checking for errors on the result
* Use "save!" when not checking the result

app/controllers/api/v1/accounts/automation_rules_controller.rb

@@ -49,7 +49,7 @@ class Api::V1::Accounts::AutomationRulesController < Api::V1::Accounts::BaseCont
   def clone
     automation_rule = Current.account.automation_rules.find_by(id: params[:automation_rule_id])
     new_rule = automation_rule.dup
-    new_rule.save
+    new_rule.save!
     @automation_rule = new_rule
   end
 

app/controllers/api/v1/accounts/channels/twilio_channels_controller.rb

@@ -44,7 +44,7 @@ class Api::V1::Accounts::Channels::TwilioChannelsController < Api::V1::Accounts:
       phone_number: phone_number,
       medium: medium
     )
-    @inbox = Current.account.inboxes.create(
+    @inbox = Current.account.inboxes.create!(
       name: permitted_params[:name],
       channel: @twilio_channel
     )

app/controllers/api/v1/accounts/contacts_controller.rb

@@ -135,7 +135,7 @@ class Api::V1::Accounts::ContactsController < Api::V1::Accounts::BaseController
 
     inbox = Current.account.inboxes.find(params[:inbox_id])
     source_id = params[:source_id] || SecureRandom.uuid
-    ContactInbox.create(contact: @contact, inbox: inbox, source_id: source_id)
+    ContactInbox.create!(contact: @contact, inbox: inbox, source_id: source_id)
   end
 
   def permitted_params

app/controllers/api/v1/widget/conversations_controller.rb

@@ -9,7 +9,7 @@ class Api::V1::Widget::ConversationsController < Api::V1::Widget::BaseController
     ActiveRecord::Base.transaction do
       process_update_contact
       @conversation = create_conversation
-      conversation.messages.create(message_params)
+      conversation.messages.create!(message_params)
     end
   end
 
@@ -59,7 +59,7 @@ class Api::V1::Widget::ConversationsController < Api::V1::Widget::BaseController
 
     unless conversation.resolved?
       conversation.status = :resolved
-      conversation.save
+      conversation.save!
     end
     head :ok
   end