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/rspec/message_helpers.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Shared helpers for testing message updates.
 RSpec.shared_context 'telegram/bot/message_helpers' do
   let(:default_message_options) { {from: from, chat: chat} }