Remove %i array syntax for older ruby versions

Author: Joel Lubrano

lib/rspec/rails/matchers/have_enqueued_mail.rb

@@ -51,15 +51,15 @@ def on_queue(queue)
           self
         end
 
-        %i[exactly at_least at_most].each do |method|
+        [:exactly, :at_least, :at_most].each do |method|
           define_method(method) do |count|
             @job_matcher.public_send(method, count)
             set_expected_count(method, count)
             self
           end
         end
 
-        %i[once twice thrice].each do |method|
+        [:once, :twice, :thrice].each do |method|
           define_method(method) do
             @job_matcher.public_send(method)
             exactly(method)