Fix the uninitialized constant ActiveSupport::LoggerThreadSafeLevel::Logger error (#447)

Author: texpert

spec/spec_helper.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-
+require 'logger'
 require 'database_cleaner'
 require 'closure_tree/test/matcher'
 require 'tmpdir'

test/test_helper.rb

@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 
+require 'logger'
 require 'erb'
 require 'active_record'
 require 'with_advisory_lock'