Require complete active_support gem

According to this comment [1] we need to load the whole of active_support
and cannot load the tagged_logging class individually.

[1] rails/rails#47733 (comment)

Author: 5minpause

lib/active_support/tagged_logging.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 require 'ipaddr'
-require_relative '../../active_support/tagged_logging'
+require "active_support"
 require_relative '../helpers/subdomain_parser'
 
 # Allow custom tags to be captured