Merge pull request #14588 from matthewd/kernel_y_with_spring

Explicitly load Kernel#y when starting a console

railties/lib/rails/engine.rb

@@ -430,6 +430,7 @@ def initialize
     # Check <tt>Rails::Railtie.console</tt> for more info.
     def load_console(app=self)
       require "pp"
+      require "psych/y"
       require "rails/console/app"
       require "rails/console/helpers"
       run_console_blocks(app)