style(rubocop): fix all safe auto correctable offenses

lib/postal/job.rb

@@ -1,16 +1,15 @@
-require 'nifty/utils/random_string'
+require "nifty/utils/random_string"
 
 module Postal
   class Job
+
     def initialize(id, params = {})
       @id = id
       @params = params.with_indifferent_access
       on_initialize
     end
 
-    def id
-      @id
-    end
+    attr_reader :id
 
     def params
       @params || {}
@@ -33,14 +32,15 @@ module Postal
     end
 
     def self.queue(queue, params = {})
-      job_id = Nifty::Utils::RandomString.generate(:length => 10).upcase
-      job_payload = {'params' => params, 'class_name' => self.name, 'id' => job_id, 'queue' => queue}
-      Postal::Worker.job_queue(queue).publish(job_payload.to_json, :persistent => false)
+      job_id = Nifty::Utils::RandomString.generate(length: 10).upcase
+      job_payload = { "params" => params, "class_name" => name, "id" => job_id, "queue" => queue }
+      Postal::Worker.job_queue(queue).publish(job_payload.to_json, persistent: false)
       job_id
     end
 
     def self.perform(params = {})
       new(nil, params).perform
     end
+
   end
 end