Update rubocop requirement from 0.90.0 to 0.91.0 (#203)

* Update rubocop requirement from 0.90.0 to 0.91.0

Updates the requirements on [rubocop](https://github.com/rubocop-hq/rubocop) to permit the latest version.
- [Release notes](https://github.com/rubocop-hq/rubocop/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v0.90.0...v0.91.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

* Skips Lint/ConstantDefinitionInBlock for spec

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
Co-authored-by: Santiago Traversa <santiago.traversa@gmail.com>

.rubocop_todo.yml

@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2020-09-07 20:25:04 UTC using RuboCop version 0.90.0.
+# on 2020-09-22 21:05:24 UTC using RuboCop version 0.91.0.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new

Gemfile

@@ -5,5 +5,5 @@ source 'https://rubygems.org'
 gemspec
 
 gem 'coveralls', require: false
-gem 'rubocop', '0.90.0', require: false
+gem 'rubocop', '0.91.0', require: false
 gem 'rubocop-performance', require: false

spec/dnsimple/client/client_service_spec.rb

@@ -6,7 +6,7 @@
 
   describe "#paginate" do
     service_class = Class.new(Dnsimple::Client::ClientService) do
-      Item = Class.new(Dnsimple::Struct::Base) do
+      Item = Class.new(Dnsimple::Struct::Base) do # rubocop:disable Lint/ConstantDefinitionInBlock
         attr_accessor :id
       end