Update rails sass to v6

Gemfile

@@ -10,7 +10,7 @@ gem 'pg', '>= 0.18', '< 2.0'
 # Use Puma as the app server
 gem 'puma', '~> 6.3'
 # Use SCSS for stylesheets
-gem 'sass-rails', '~> 5.1', '>= 5.1.0'
+gem 'sass-rails', '~> 6.0', '>= 6.0.0'
 # See https:/rails/execjs#readme for more supported runtimes
 # gem 'mini_racer', platforms: :ruby
 

Gemfile.lock

@@ -520,17 +520,18 @@ GEM
  nokogiri (>= 1.10.8)
  rubyzip (>= 1.3.0)
  rubyzip (1.3.0)
- sass (3.7.4)
- sass-listen (~> 4.0.0)
- sass-listen (4.0.0)
- rb-fsevent (~> 0.9, >= 0.9.4)
- rb-inotify (~> 0.9, >= 0.9.7)
- sass-rails (5.1.0)
- railties (>= 5.2.0)
- sass (~> 3.1)
- sprockets (>= 2.8, < 4.0)
- sprockets-rails (>= 2.0, < 4.0)
- tilt (>= 1.1, < 3)
+ sass-rails (6.0.0)
+ sassc-rails (~> 2.1, >= 2.1.1)
+ sassc (2.4.0)
+ ffi (~> 1.9)
+ sassc (2.4.0-x64-mingw32)
+ ffi (~> 1.9)
+ sassc-rails (2.1.2)
+ railties (>= 4.0.0)
+ sassc (>= 2.0)
+ sprockets (> 3.0)
+ sprockets-rails
+ tilt
  selenium-webdriver (4.11.0)
  rexml (~> 3.2, >= 3.2.5)
  rubyzip (>= 1.2.2, < 3.0)
@@ -692,7 +693,7 @@ DEPENDENCIES
  rubocop-rspec (>= 2.2.0)
  rubyXL (>= 3.4.23)
  rubyzip (>= 1.2.1)
- sass-rails (~> 5.1, >= 5.1.0)
+ sass-rails (~> 6.0, >= 6.0.0)
  selenium-webdriver (>= 3.142.3)
  shakapacker (~> 7.0.3)
  shoulda-matchers (>= 5.1.0)