Upgrade to Rails 7.1

We're disabling `action_controller.raise_on_missing_callback_actions`
because sometimes we include `before_action :something, only: actions`
in concerns, and we include these concerns in controllers that don't
have all these actions.

Note that Rails 7.1 logs to STDOUT by default [1]; we're re-adding the
condition `if ENV["RAILS_LOG_TO_STDOUT"].present?` because we're still
using files and we're rotating the logs to avoid running out of space.

Also note that the GraphQL controller test (which is actually a request
test, since it's got `type: :request`) that was raising an exception no
longer does it thanks to the new default value for the
`config.action_dispatch.show_exceptions` configuration option. So we're
updating the test accordingly. This option doesn't affect regular
controller tests (without the `type: :request` option), so in other
tests we're still checking exceptions.

[1] Pull request 47138 in https://github.com/rails/rails

config/environments/test.rb

@@ -15,12 +15,13 @@ Rails.application.configure do
   config.i18n.default_locale = :en
   config.i18n.available_locales = %w[de en es fr nl pt-BR zh-CN]
 
-  # Turn false under Spring and add config.action_view.cache_template_loading = true.
-  config.cache_classes = true
+  # While tests run files are not watched, reloading is not necessary.
+  config.enable_reloading = false
 
-  # Eager loading loads your whole application. When running a single test locally,
-  # this probably isn't necessary. It's a good idea to do in a continuous integration
-  # system, or in some way before deploying your code.
+  # Eager loading loads your entire application. When running a single test locally,
+  # this is usually not necessary, and can slow down your test suite. However, it's
+  # recommended that you enable it in continuous integration systems to ensure eager
+  # loading is working properly before deploying your code.
   config.eager_load = ENV["CI"].present?
 
   # Configure public file server for tests with Cache-Control for performance.
@@ -30,12 +31,12 @@ Rails.application.configure do
   }
 
   # Show full error reports and disable caching.
-  config.consider_all_requests_local       = true
+  config.consider_all_requests_local = true
   config.action_controller.perform_caching = false
   config.cache_store = :null_store
 
-  # Raise exceptions instead of rendering exception templates.
-  config.action_dispatch.show_exceptions = false
+  # Render exception templates for rescuable exceptions and raise for other exceptions.
+  config.action_dispatch.show_exceptions = :rescuable
 
   # Disable request forgery protection in test environment.
   config.action_controller.allow_forgery_protection = false
@@ -72,6 +73,9 @@ Rails.application.configure do
   logger.formatter = config.log_formatter
   config.logger = ActiveSupport::TaggedLogging.new(logger)
 
+  # Raise error when a before_action's only/except options reference missing actions
+  # config.action_controller.raise_on_missing_callback_actions = true
+
   # Allow managing different tenants using the same application
   config.multitenancy = true