Update CSV to 3.2 (#35361).

git-svn-id: http://svn.redmine.org/redmine/trunk@21027 e93f8b46-1217-0410-a6f0-8f06a7374b81

Gemfile

@@ -11,7 +11,7 @@ gem "actionpack-xml_parser"
 gem 'roadie-rails', '~> 2.2.0'
 gem 'marcel'
 gem "mail", "~> 2.7.1"
-gem 'csv', '~> 3.1.1'
+gem 'csv', '~> 3.2.0'
 gem 'nokogiri', '~> 1.11.1'
 gem 'i18n', '~> 1.8.2'
 gem "rbpdf", "~> 1.20.0"