Add bundled gems to Gemfile: csv

cf. https://gihyo.jp/article/2024/01/ruby3.3-bundled-gems

Author: yasulab

Gemfile

@@ -18,6 +18,8 @@ gem 'sass-rails', '>= 5'
 gem 'simple_grid_rails'
 gem 'uglifier'
 
+gem 'csv' # Need to declare due to become a bundled gem
+
 # Rails 7.1では不要になったため、バージョン制限を解除
 gem 'concurrent-ruby'
 

Gemfile.lock

@@ -146,6 +146,7 @@ GEM
     concurrent-ruby (1.3.5)
     connection_pool (2.5.3)
     crass (1.0.6)
+    csv (3.3.4)
     date (3.4.1)
     declarative (0.0.20)
     diff-lcs (1.6.2)
@@ -575,6 +576,7 @@ DEPENDENCIES
   capybara
   coffee-rails
   concurrent-ruby
+  csv
   dotenv-rails
   factory_bot_rails
   faraday