PERF: enable bootsnap globally

If people wish to opt out they can use `DISABLE_BOOTSNAP = 1`

Bootsnap is production ready and was tested on our production
servers for safety.

Promoting it now so it is enabled globally.

Will result in faster application boot

config/boot.rb

@@ -12,7 +12,7 @@
 
 require 'bundler/setup' if File.exists?(ENV['BUNDLE_GEMFILE'])
 
-if (ENV['FORCE_BOOTSNAP'] == '1') || (ENV['RAILS_ENV'] != 'production' && ENV['RAILS_ENV'] != 'profile')
+if (ENV['DISABLE_BOOTSNAP'] != '1')
   begin
     require 'bootsnap'
   rescue LoadError