Use Rails 7.0 smtp_timeout config

We don't send email with smtp so we can set this new default with no
effect.

config/initializers/new_framework_defaults_7_0.rb

@@ -41,7 +41,7 @@
 # Rails.application.config.active_support.executor_around_test_case = true
 
 # Set both the `:open_timeout` and `:read_timeout` values for `:smtp` delivery method.
-# Rails.application.config.action_mailer.smtp_timeout = 5
+Rails.application.config.action_mailer.smtp_timeout = 5
 
 # Automatically infer `inverse_of` for associations with a scope.
 # Rails.application.config.active_record.automatic_scope_inversing = true