Bump RuboCop RSpec to 2.5

Author: koic

Gemfile

@@ -11,7 +11,7 @@ gem 'rake'
 gem 'rspec'
 gem 'rubocop', github: 'rubocop/rubocop'
 gem 'rubocop-performance', '~> 1.11.0'
-gem 'rubocop-rspec', '~> 2.4.0'
+gem 'rubocop-rspec', '~> 2.5.0'
 gem 'simplecov'
 gem 'test-queue'
 gem 'yard', '~> 0.9'

spec/rubocop/cop/rails/assert_not_spec.rb

@@ -56,7 +56,7 @@
     RUBY
   end
 
-  it 'does not register an offense when using `assert_not` ' do
+  it 'does not register an offense when using `assert_not`' do
     expect_no_offenses(<<~RUBY)
       assert_not foo
     RUBY

spec/rubocop/cop/rails/presence_spec.rb

@@ -158,7 +158,7 @@
     RUBY
   end
 
-  it 'does not register an offense when if or unless modifier is used ' do
+  it 'does not register an offense when if or unless modifier is used' do
     [
       'a if a.blank?',
       'a unless a.present?'