Update rubopcop (#227)

* Update rubopcop [WIP]

* Further rubocop fixes

* Fix rubocop-rails cops

* Fix spec

* Disable rubocop suggestions

* Run rubocop in github actions rather than in codeclimate

lib/telegram/bot/debug_client.rb

@@ -1,7 +1,9 @@
+# frozen_string_literal: true
+
 module Telegram
   module Bot
     module DebugClient
-      def debug!(dev = STDOUT)
+      def debug!(dev = $stdout)
         if block_given?
           begin
             old_dev = client.debug_dev