Update rubocop-rspec 1.12.0 -> 1.15.0

Gemfile

@@ -312,7 +312,7 @@ group :development, :test do
   gem 'spring-commands-spinach', '~> 1.1.0'
 
   gem 'rubocop', '~> 0.47.1', require: false
-  gem 'rubocop-rspec', '~> 1.12.0', require: false
+  gem 'rubocop-rspec', '~> 1.15.0', require: false
   gem 'scss_lint', '~> 0.47.0', require: false
   gem 'haml_lint', '~> 0.21.0', require: false
   gem 'simplecov', '~> 0.14.0', require: false

Gemfile.lock

@@ -704,7 +704,7 @@ GEM
       rainbow (>= 1.99.1, < 3.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.0, >= 1.0.1)
-    rubocop-rspec (1.12.0)
+    rubocop-rspec (1.15.0)
       rubocop (>= 0.42.0)
     ruby-fogbugz (0.2.1)
       crack (~> 0.4)
@@ -1029,7 +1029,7 @@ DEPENDENCIES
   rspec-retry (~> 0.4.5)
   rspec_profiling (~> 0.0.5)
   rubocop (~> 0.47.1)
-  rubocop-rspec (~> 1.12.0)
+  rubocop-rspec (~> 1.15.0)
   ruby-fogbugz (~> 0.2.1)
   ruby-prof (~> 0.16.2)
   rugged (~> 0.25.1.1)