Update Rails to 5.2.8.1 (#37465).

git-svn-id: https://svn.redmine.org/redmine/branches/4.2-stable@21721 e93f8b46-1217-0410-a6f0-8f06a7374b81

Gemfile

@@ -3,7 +3,7 @@ source 'https://rubygems.org'
 ruby '>= 2.4.0', '< 2.8.0'
 gem 'bundler', '>= 1.12.0'
 
-gem 'rails', '5.2.8'
+gem 'rails', '5.2.8.1'
 gem 'sprockets', '~> 3.7.2' if RUBY_VERSION < '2.5'
 gem 'globalid', '~> 0.4.2' if Gem.ruby_version < Gem::Version.new('2.6.0')
 gem 'rouge', '~> 3.26.0'
@@ -25,6 +25,7 @@ gem 'i18n', '~> 1.8.2'
 gem "rbpdf", "~> 1.20.0"
 gem 'addressable'
 gem 'rubyzip', '~> 2.3.0'
+gem 'psych', '~> 3.1' if Gem.ruby_version < Gem::Version.new('2.6.0')
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
 gem 'tzinfo-data', platforms: [:mingw, :x64_mingw, :mswin]

config/application.rb

@@ -32,6 +32,10 @@ module RedmineApp
 
     config.active_record.store_full_sti_class = true
     config.active_record.default_timezone = :local
+    config.active_record.yaml_column_permitted_classes = [
+      Symbol,
+      ActiveSupport::HashWithIndifferentAccess
+    ]
 
     # Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.
     # Run "rake -D time" for a list of tasks for finding time zone names. Default is UTC.